64646562 has 8 divisors (see below), whose sum is σ = 129293136. Its totient is φ = 21548852.

The previous prime is 64646513. The next prime is 64646567. The reversal of 64646562 is 26564646.

It is a sphenic number, since it is the product of 3 distinct primes.

64646562 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 64646562.

It is not an unprimeable number, because it can be changed into a prime (64646567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5387208 + ... + 5387219.

It is an arithmetic number, because the mean of its divisors is an integer number (16161642).

Almost surely, 2^64646562 is an apocalyptic number.

64646562 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64646562 is a wasteful number, since it uses less digits than its factorization.

64646562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10774432.

The product of its digits is 207360, while the sum is 39.

The square root of 64646562 is about 8040.3085761680. The cubic root of 64646562 is about 401.3424934046.

The spelling of 64646562 in words is "sixty-four million, six hundred forty-six thousand, five hundred sixty-two".