64814928 has 40 divisors (see below), whose sum is σ = 176253600. Its totient is φ = 20467584.

The previous prime is 64814923. The next prime is 64814933. The reversal of 64814928 is 82941846.

It is an interprime number because it is at equal distance from previous prime (64814923) and next prime (64814933).

It is a self number, because there is not a number n which added to its sum of digits gives 64814928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64814921) 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 7 ways as a sum of consecutive naturals, for example, 34623 + ... + 36446.

It is an arithmetic number, because the mean of its divisors is an integer number (4406340).

Almost surely, 2^64814928 is an apocalyptic number.

It is an amenable number.

64814928 is an abundant number, since it is smaller than the sum of its proper divisors (111438672).

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

64814928 is a wasteful number, since it uses less digits than its factorization.

64814928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71099 (or 71093 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 64814928 is about 8050.7718884589. The cubic root of 64814928 is about 401.6906111845.

It can be divided in two parts, 648 and 14928, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 64814928 in words is "sixty-four million, eight hundred fourteen thousand, nine hundred twenty-eight".