64688662 has 16 divisors (see below), whose sum is σ = 99020880. Its totient is φ = 31685632.

The previous prime is 64688653. The next prime is 64688677. The reversal of 64688662 is 26688646.

64688662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40878 + ... + 42430.

It is an arithmetic number, because the mean of its divisors is an integer number (6188805).

Almost surely, 2^64688662 is an apocalyptic number.

64688662 is a deficient number, since it is larger than the sum of its proper divisors (34332218).

64688662 is a wasteful number, since it uses less digits than its factorization.

64688662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its digits is 663552, while the sum is 46.

The square root of 64688662 is about 8042.9262087874. The cubic root of 64688662 is about 401.4295970438.

The spelling of 64688662 in words is "sixty-four million, six hundred eighty-eight thousand, six hundred sixty-two".