64642360 has 32 divisors (see below), whose sum is σ = 146331360. Its totient is φ = 25699456.

The previous prime is 64642321. The next prime is 64642379. The reversal of 64642360 is 6324646.

It is a congruent number.

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, 1842 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (4572855).

Almost surely, 2^64642360 is an apocalyptic number.

It is an amenable number.

64642360 is an abundant number, since it is smaller than the sum of its proper divisors (81689000).

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

64642360 is a wasteful number, since it uses less digits than its factorization.

64642360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855 (or 9851 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 64642360 is about 8040.0472635427. The cubic root of 64642360 is about 401.3337975170. Note that the first 3 decimals are identical.

The spelling of 64642360 in words is "sixty-four million, six hundred forty-two thousand, three hundred sixty".