139210664 has 8 divisors (see below), whose sum is σ = 261020010. Its totient is φ = 69605328.

The previous prime is 139210633. The next prime is 139210681. The reversal of 139210664 is 466012931.

139210664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 107288164 + 31922500 = 10358^2 + 5650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 139210664.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8700659 + ... + 8700674.

Almost surely, 2^139210664 is an apocalyptic number.

It is an amenable number.

139210664 is a deficient number, since it is larger than the sum of its proper divisors (121809346).

139210664 is a wasteful number, since it uses less digits than its factorization.

139210664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17401339 (or 17401335 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 139210664 is about 11798.7568836721. The cubic root of 139210664 is about 518.2717079049.

The spelling of 139210664 in words is "one hundred thirty-nine million, two hundred ten thousand, six hundred sixty-four".