1066640029 has 16 divisors (see below), whose sum is σ = 1331285760. Its totient is φ = 832043520.

The previous prime is 1066640023. The next prime is 1066640041. The reversal of 1066640029 is 9200466601.

It is not a de Polignac number, because 1066640029 - 2⁷ = 1066639901 is a prime.

It is a super-2 number, since 2×1066640029² = 2275441902930241682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066639976 and 1066640003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066640023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76084 + ... + 89005.

It is an arithmetic number, because the mean of its divisors is an integer number (83205360).

Almost surely, 2^1066640029 is an apocalyptic number.

It is an amenable number.

1066640029 is a deficient number, since it is larger than the sum of its proper divisors (264645731).

1066640029 is a wasteful number, since it uses less digits than its factorization.

1066640029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165180.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1066640029 is about 32659.4554302426. The cubic root of 1066640029 is about 1021.7374044976.

The spelling of 1066640029 in words is "one billion, sixty-six million, six hundred forty thousand, twenty-nine".