140656164 has 96 divisors (see below), whose sum is σ = 399168000. Its totient is φ = 37992960.

The previous prime is 140656163. The next prime is 140656169. The reversal of 140656164 is 461656041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (140656163) 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 31 ways as a sum of consecutive naturals, for example, 40987 + ... + 44285.

It is an arithmetic number, because the mean of its divisors is an integer number (4158000).

Almost surely, 2^140656164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140656164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199584000).

140656164 is an abundant number, since it is smaller than the sum of its proper divisors (258511836).

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

140656164 is a wasteful number, since it uses less digits than its factorization.

140656164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 140656164 is about 11859.8551424543. The cubic root of 140656164 is about 520.0593669892.

The spelling of 140656164 in words is "one hundred forty million, six hundred fifty-six thousand, one hundred sixty-four".