140561564 has 48 divisors (see below), whose sum is σ = 298346496. Its totient is φ = 57067200.

The previous prime is 140561549. The next prime is 140561567. The reversal of 140561564 is 465165041.

It is a self number, because there is not a number n which added to its sum of digits gives 140561564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140561567) 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 15 ways as a sum of consecutive naturals, for example, 13769 + ... + 21695.

It is an arithmetic number, because the mean of its divisors is an integer number (6215552).

Almost surely, 2^140561564 is an apocalyptic number.

It is an amenable number.

140561564 is an abundant number, since it is smaller than the sum of its proper divisors (157784932).

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

140561564 is a wasteful number, since it uses less digits than its factorization.

140561564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7986 (or 7984 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 140561564 is about 11855.8662273155. The cubic root of 140561564 is about 519.9427501075.

The spelling of 140561564 in words is "one hundred forty million, five hundred sixty-one thousand, five hundred sixty-four".