64072686 has 16 divisors (see below), whose sum is σ = 128264400. Its totient is φ = 21337728.

The previous prime is 64072681. The next prime is 64072699. The reversal of 64072686 is 68627046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64072681) by changing a digit.

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, 3030 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (8016525).

Almost surely, 2^64072686 is an apocalyptic number.

64072686 is an abundant number, since it is smaller than the sum of its proper divisors (64191714).

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

64072686 is a wasteful number, since it uses less digits than its factorization.

64072686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9923.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 64072686 is about 8004.5415858749. The cubic root of 64072686 is about 400.1513718758.

The spelling of 64072686 in words is "sixty-four million, seventy-two thousand, six hundred eighty-six".