140656623 has 16 divisors (see below), whose sum is σ = 199008000. Its totient is φ = 88062336.

The previous prime is 140656613. The next prime is 140656673. The reversal of 140656623 is 326656041.

It is not a de Polignac number, because 140656623 - 2⁵ = 140656591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140656613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22686 + ... + 28212.

It is an arithmetic number, because the mean of its divisors is an integer number (12438000).

Almost surely, 2^140656623 is an apocalyptic number.

140656623 is a deficient number, since it is larger than the sum of its proper divisors (58351377).

140656623 is a wasteful number, since it uses less digits than its factorization.

140656623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 140656623 is about 11859.8744934337. The cubic root of 140656623 is about 520.0599326878.

The spelling of 140656623 in words is "one hundred forty million, six hundred fifty-six thousand, six hundred twenty-three".