64765129 has 32 divisors (see below), whose sum is σ = 81164160. Its totient is φ = 51226560.

The previous prime is 64765123. The next prime is 64765153. The reversal of 64765129 is 92156746.

It is not a de Polignac number, because 64765129 - 2⁵ = 64765097 is a prime.

Its product of digits (90720) is a multiple of the sum of its prime divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 64765091 and 64765100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64765123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328659 + ... + 328855.

It is an arithmetic number, because the mean of its divisors is an integer number (2536380).

Almost surely, 2^64765129 is an apocalyptic number.

It is an amenable number.

64765129 is a deficient number, since it is larger than the sum of its proper divisors (16399031).

64765129 is a wasteful number, since it uses less digits than its factorization.

64765129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 240 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 64765129 is about 8047.6784851285. The cubic root of 64765129 is about 401.5877083672.

The spelling of 64765129 in words is "sixty-four million, seven hundred sixty-five thousand, one hundred twenty-nine".