129664683 has 12 divisors (see below), whose sum is σ = 197151240. Its totient is φ = 81893376.

The previous prime is 129664679. The next prime is 129664739. The reversal of 129664683 is 386466921.

129664683 is a `hidden beast` number, since 129 + 66 + 468 + 3 = 666.

It is not a de Polignac number, because 129664683 - 2² = 129664679 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (129664603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378966 + ... + 379307.

It is an arithmetic number, because the mean of its divisors is an integer number (16429270).

Almost surely, 2^129664683 is an apocalyptic number.

129664683 is a deficient number, since it is larger than the sum of its proper divisors (67486557).

129664683 is a wasteful number, since it uses less digits than its factorization.

129664683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758298 (or 758295 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 129664683 is about 11387.0401334148. The cubic root of 129664683 is about 506.1437761585.

The spelling of 129664683 in words is "one hundred twenty-nine million, six hundred sixty-four thousand, six hundred eighty-three".