64606686 has 16 divisors (see below), whose sum is σ = 131332368. Its totient is φ = 21182400.

The previous prime is 64606673. The next prime is 64606691. The reversal of 64606686 is 68660646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87895 + ... + 88626.

It is an arithmetic number, because the mean of its divisors is an integer number (8208273).

Almost surely, 2^64606686 is an apocalyptic number.

64606686 is an abundant number, since it is smaller than the sum of its proper divisors (66725682).

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

64606686 is a wasteful number, since it uses less digits than its factorization.

64606686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176587.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 64606686 is about 8037.8284380795. The cubic root of 64606686 is about 401.2599562751.

The spelling of 64606686 in words is "sixty-four million, six hundred six thousand, six hundred eighty-six".