140660664 has 16 divisors (see below), whose sum is σ = 351651720. Its totient is φ = 46886880.

The previous prime is 140660659. The next prime is 140660683. The reversal of 140660664 is 466066041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2930407 + ... + 2930454.

Almost surely, 2^140660664 is an apocalyptic number.

It is an amenable number.

140660664 is an abundant number, since it is smaller than the sum of its proper divisors (210991056).

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

140660664 is a wasteful number, since it uses less digits than its factorization.

140660664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860870 (or 5860866 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 140660664 is about 11860.0448565762. The cubic root of 140660664 is about 520.0649130009.

The spelling of 140660664 in words is "one hundred forty million, six hundred sixty thousand, six hundred sixty-four".