64628679 has 16 divisors (see below), whose sum is σ = 91452672. Its totient is φ = 40457088.

The previous prime is 64628657. The next prime is 64628723. The reversal of 64628679 is 97682646.

It is not a de Polignac number, because 64628679 - 2⁵ = 64628647 is a prime.

It is a super-2 number, since 2×64628679² = 8353732298570082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64628779) 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, 25462 + ... + 27884.

It is an arithmetic number, because the mean of its divisors is an integer number (5715792).

Almost surely, 2^64628679 is an apocalyptic number.

64628679 is a deficient number, since it is larger than the sum of its proper divisors (26823993).

64628679 is a wasteful number, since it uses less digits than its factorization.

64628679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966.

The product of its digits is 870912, while the sum is 48.

The square root of 64628679 is about 8039.1964150654. The cubic root of 64628679 is about 401.3054825696.

The spelling of 64628679 in words is "sixty-four million, six hundred twenty-eight thousand, six hundred seventy-nine".