64628634 has 16 divisors (see below), whose sum is σ = 147722688. Its totient is φ = 18465312.

The previous prime is 64628623. The next prime is 64628647. The reversal of 64628634 is 43682646.

It is a super-3 number, since 3×64628634³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64628592 and 64628601.

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, 769347 + ... + 769430.

It is an arithmetic number, because the mean of its divisors is an integer number (9232668).

Almost surely, 2^64628634 is an apocalyptic number.

64628634 is an abundant number, since it is smaller than the sum of its proper divisors (83094054).

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

64628634 is a wasteful number, since it uses less digits than its factorization.

64628634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538789.

The product of its digits is 165888, while the sum is 39.

The square root of 64628634 is about 8039.1936162777. The cubic root of 64628634 is about 401.3053894285.

The spelling of 64628634 in words is "sixty-four million, six hundred twenty-eight thousand, six hundred thirty-four".