64612686 has 16 divisors (see below), whose sum is σ = 131975424. Its totient is φ = 21079224.

The previous prime is 64612663. The next prime is 64612697. The reversal of 64612686 is 68621646.

It is a super-3 number, since 3×64612686³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

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, 114280 + ... + 114843.

It is an arithmetic number, because the mean of its divisors is an integer number (8248464).

Almost surely, 2^64612686 is an apocalyptic number.

64612686 is an abundant number, since it is smaller than the sum of its proper divisors (67362738).

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

64612686 is a wasteful number, since it uses less digits than its factorization.

64612686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229175.

The product of its digits is 82944, while the sum is 39.

The square root of 64612686 is about 8038.2016645516. The cubic root of 64612686 is about 401.2723775138.

The spelling of 64612686 in words is "sixty-four million, six hundred twelve thousand, six hundred eighty-six".