64626401 has 16 divisors (see below), whose sum is σ = 79315200. Its totient is φ = 51394560.

The previous prime is 64626379. The next prime is 64626407. The reversal of 64626401 is 10462646.

It is not a de Polignac number, because 64626401 - 2⁶ = 64626337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64626407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4625 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (4957200).

Almost surely, 2^64626401 is an apocalyptic number.

It is an amenable number.

64626401 is a deficient number, since it is larger than the sum of its proper divisors (14688799).

64626401 is a wasteful number, since it uses less digits than its factorization.

64626401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7744.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64626401 is about 8039.0547329894. The cubic root of 64626401 is about 401.3007675079.

The spelling of 64626401 in words is "sixty-four million, six hundred twenty-six thousand, four hundred one".