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1066640031 = 321923926099
BaseRepresentation
bin111111100100111…
…010001010011111
32202100001221001100
4333210322022133
54141024440111
6253501444143
735301201462
oct7744721237
92670057040
101066640031
114a80aa496
12259270653
1313cca0562
14a19372d9
1563996756
hex3f93a29f

1066640031 has 24 divisors (see below), whose sum is σ = 1628640000. Its totient is φ = 670822992.

The previous prime is 1066640023. The next prime is 1066640041. The reversal of 1066640031 is 1300466601.

It is not a de Polignac number, because 1066640031 - 23 = 1066640023 is a prime.

It is a super-2 number, since 2×10666400312 = 2275441911463361922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066639977 and 1066640004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066640041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27820 + ... + 53918.

It is an arithmetic number, because the mean of its divisors is an integer number (67860000).

Almost surely, 21066640031 is an apocalyptic number.

1066640031 is a deficient number, since it is larger than the sum of its proper divisors (561999969).

1066640031 is a wasteful number, since it uses less digits than its factorization.

1066640031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26363 (or 26360 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1066640031 is about 32659.4554608616. The cubic root of 1066640031 is about 1021.7374051362.

The spelling of 1066640031 in words is "one billion, sixty-six million, six hundred forty thousand, thirty-one".

Divisors: 1 3 9 19 57 171 239 717 2151 4541 13623 26099 40869 78297 234891 495881 1487643 4462929 6237661 18712983 56138949 118515559 355546677 1066640031