140508656 has 20 divisors (see below), whose sum is σ = 284072592. Its totient is φ = 67199616.

The previous prime is 140508611. The next prime is 140508673. The reversal of 140508656 is 656805041.

It is a happy number.

140508656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190541 + ... + 191276.

Almost surely, 2^140508656 is an apocalyptic number.

140508656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

140508656 is an abundant number, since it is smaller than the sum of its proper divisors (143563936).

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

140508656 is a wasteful number, since it uses less digits than its factorization.

140508656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381848 (or 381842 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 140508656 is about 11853.6347168284. The cubic root of 140508656 is about 519.8775056635.

The spelling of 140508656 in words is "one hundred forty million, five hundred eight thousand, six hundred fifty-six".