64764830 has 64 divisors (see below), whose sum is σ = 133358400. Its totient is φ = 22471680.

The previous prime is 64764827. The next prime is 64764839. The reversal of 64764830 is 3846746.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64764839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154361 + ... + 154779.

It is an arithmetic number, because the mean of its divisors is an integer number (2083725).

Almost surely, 2^64764830 is an apocalyptic number.

64764830 is an abundant number, since it is smaller than the sum of its proper divisors (68593570).

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

64764830 is a wasteful number, since it uses less digits than its factorization.

64764830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 64764830 is about 8047.6599083212. The cubic root of 64764830 is about 401.5870903653.

The spelling of 64764830 in words is "sixty-four million, seven hundred sixty-four thousand, eight hundred thirty".