139755664 has 10 divisors (see below), whose sum is σ = 270776630. Its totient is φ = 69877824.

The previous prime is 139755643. The next prime is 139755683. The reversal of 139755664 is 466557931.

It can be written as a sum of positive squares in only one way, i.e., 139712400 + 43264 = 11820^2 + 208^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4367349 + ... + 4367380.

It is an arithmetic number, because the mean of its divisors is an integer number (27077663).

Almost surely, 2^139755664 is an apocalyptic number.

It is an amenable number.

139755664 is a deficient number, since it is larger than the sum of its proper divisors (131020966).

139755664 is an equidigital number, since it uses as much as digits as its factorization.

139755664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734737 (or 8734731 counting only the distinct ones).

The product of its digits is 680400, while the sum is 46.

The square root of 139755664 is about 11821.8299767845. The cubic root of 139755664 is about 518.9471597012.

The spelling of 139755664 in words is "one hundred thirty-nine million, seven hundred fifty-five thousand, six hundred sixty-four".