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64103023 = 531209491
BaseRepresentation
bin1111010010001…
…0001001101111
311110121202211001
43310202021233
5112402244043
610205541131
71405603165
oct364421157
9143552731
1064103023
1133203606
12195747a7
13103856aa
148729235
15596374d
hex3d2226f

64103023 has 4 divisors (see below), whose sum is σ = 65312568. Its totient is φ = 62893480.

The previous prime is 64103003. The next prime is 64103027. The reversal of 64103023 is 32030146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32030146 = 216015073.

It is a cyclic number.

It is not a de Polignac number, because 64103023 - 25 = 64102991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64103027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604693 + ... + 604798.

It is an arithmetic number, because the mean of its divisors is an integer number (16328142).

Almost surely, 264103023 is an apocalyptic number.

64103023 is a deficient number, since it is larger than the sum of its proper divisors (1209545).

64103023 is a wasteful number, since it uses less digits than its factorization.

64103023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209544.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 64103023 is about 8006.4363483388. The cubic root of 64103023 is about 400.2145161864.

Adding to 64103023 its reverse (32030146), we get a palindrome (96133169).

The spelling of 64103023 in words is "sixty-four million, one hundred three thousand, twenty-three".

Divisors: 1 53 1209491 64103023