64765500 has 48 divisors (see below), whose sum is σ = 188601504. Its totient is φ = 17270400.

The previous prime is 64765499. The next prime is 64765501. The reversal of 64765500 is 556746.

It is an interprime number because it is at equal distance from previous prime (64765499) and next prime (64765501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64765501) 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, 20089 + ... + 23088.

It is an arithmetic number, because the mean of its divisors is an integer number (3929198).

Almost surely, 2^64765500 is an apocalyptic number.

64765500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64765500 is an abundant number, since it is smaller than the sum of its proper divisors (123836004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64765500 is a wasteful number, since it uses less digits than its factorization.

64765500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43199 (or 43187 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 64765500 is about 8047.7015352211. The cubic root of 64765500 is about 401.5884751829.

The spelling of 64765500 in words is "sixty-four million, seven hundred sixty-five thousand, five hundred".