64809932 has 12 divisors (see below), whose sum is σ = 123728136. Its totient is φ = 29459040.

The previous prime is 64809923. The next prime is 64809947. The reversal of 64809932 is 23990846.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64809932.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 736433 + ... + 736520.

It is an arithmetic number, because the mean of its divisors is an integer number (10310678).

Almost surely, 2^64809932 is an apocalyptic number.

It is an amenable number.

64809932 is a deficient number, since it is larger than the sum of its proper divisors (58918204).

64809932 is a wasteful number, since it uses less digits than its factorization.

64809932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472968 (or 1472966 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 64809932 is about 8050.4616016723. The cubic root of 64809932 is about 401.6802900135.

The spelling of 64809932 in words is "sixty-four million, eight hundred nine thousand, nine hundred thirty-two".