64679628 has 96 divisors (see below), whose sum is σ = 178234560. Its totient is φ = 18084864.

The previous prime is 64679579. The next prime is 64679633. The reversal of 64679628 is 82697646.

Its product of digits (870912) is a multiple of the sum of its prime divisors (64).

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 31 ways as a sum of consecutive naturals, for example, 2230318 + ... + 2230346.

It is an arithmetic number, because the mean of its divisors is an integer number (1856610).

Almost surely, 2^64679628 is an apocalyptic number.

64679628 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64679628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89117280).

64679628 is an abundant number, since it is smaller than the sum of its proper divisors (113554932).

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

64679628 is a wasteful number, since it uses less digits than its factorization.

64679628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 64 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 64679628 is about 8042.3645776600. The cubic root of 64679628 is about 401.4109091537.

The spelling of 64679628 in words is "sixty-four million, six hundred seventy-nine thousand, six hundred twenty-eight".