64421626 has 8 divisors (see below), whose sum is σ = 97138944. Its totient is φ = 32041980.

The previous prime is 64421603. The next prime is 64421633. The reversal of 64421626 is 62612446.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83940 + ... + 84703.

It is an arithmetic number, because the mean of its divisors is an integer number (12142368).

Almost surely, 2^64421626 is an apocalyptic number.

64421626 is a deficient number, since it is larger than the sum of its proper divisors (32717318).

64421626 is a wasteful number, since it uses less digits than its factorization.

64421626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168836.

The product of its digits is 13824, while the sum is 31.

The square root of 64421626 is about 8026.3083668646. The cubic root of 64421626 is about 400.8764656174.

The spelling of 64421626 in words is "sixty-four million, four hundred twenty-one thousand, six hundred twenty-six".