139061664 has 96 divisors (see below), whose sum is σ = 463559040. Its totient is φ = 39730176.

The previous prime is 139061633. The next prime is 139061669. The reversal of 139061664 is 466160931.

139061664 is a `hidden beast` number, since 1 + 39 + 0 + 616 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (139061669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5449 + ... + 17544.

It is an arithmetic number, because the mean of its divisors is an integer number (4828740).

Almost surely, 2^139061664 is an apocalyptic number.

139061664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139061664 is an abundant number, since it is smaller than the sum of its proper divisors (324497376).

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

139061664 is a wasteful number, since it uses less digits than its factorization.

139061664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23019 (or 23005 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 139061664 is about 11792.4409686884. The cubic root of 139061664 is about 518.0867363192.

The spelling of 139061664 in words is "one hundred thirty-nine million, sixty-one thousand, six hundred sixty-four".