64879072 has 48 divisors (see below), whose sum is σ = 142385040. Its totient is φ = 28919808.

The previous prime is 64879069. The next prime is 64879081. The reversal of 64879072 is 27097846.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7198 + ... + 13474.

It is an arithmetic number, because the mean of its divisors is an integer number (2966355).

Almost surely, 2^64879072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64879072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71192520).

64879072 is an abundant number, since it is smaller than the sum of its proper divisors (77505968).

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

64879072 is a wasteful number, since it uses less digits than its factorization.

64879072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323 (or 6315 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 64879072 is about 8054.7546207194. The cubic root of 64879072 is about 401.8230783401.

The spelling of 64879072 in words is "sixty-four million, eight hundred seventy-nine thousand, seventy-two".