140505646 has 32 divisors (see below), whose sum is σ = 236079360. Its totient is φ = 62326656.

The previous prime is 140505619. The next prime is 140505661. The reversal of 140505646 is 646505041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169485 + ... + 170311.

It is an arithmetic number, because the mean of its divisors is an integer number (7377480).

Almost surely, 2^140505646 is an apocalyptic number.

140505646 is a deficient number, since it is larger than the sum of its proper divisors (95573714).

140505646 is a wasteful number, since it uses less digits than its factorization.

140505646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 140505646 is about 11853.5077508727. The cubic root of 140505646 is about 519.8737933360.

The spelling of 140505646 in words is "one hundred forty million, five hundred five thousand, six hundred forty-six".