64942860 has 24 divisors (see below), whose sum is σ = 181840176. Its totient is φ = 17318080.

The previous prime is 64942859. The next prime is 64942877. The reversal of 64942860 is 6824946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541131 + ... + 541250.

It is an arithmetic number, because the mean of its divisors is an integer number (7576674).

Almost surely, 2^64942860 is an apocalyptic number.

64942860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64942860 is an abundant number, since it is smaller than the sum of its proper divisors (116897316).

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

64942860 is a wasteful number, since it uses less digits than its factorization.

64942860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082393 (or 1082391 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 64942860 is about 8058.7132967987. The cubic root of 64942860 is about 401.9547237442.

The spelling of 64942860 in words is "sixty-four million, nine hundred forty-two thousand, eight hundred sixty".