140664560 has 20 divisors (see below), whose sum is σ = 327045288. Its totient is φ = 56265792.

The previous prime is 140664551. The next prime is 140664569. The reversal of 140664560 is 65466041.

It is an interprime number because it is at equal distance from previous prime (140664551) and next prime (140664569).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140664569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879074 + ... + 879233.

Almost surely, 2^140664560 is an apocalyptic number.

140664560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140664560 is an abundant number, since it is smaller than the sum of its proper divisors (186380728).

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

140664560 is a wasteful number, since it uses less digits than its factorization.

140664560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758320 (or 1758314 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 140664560 is about 11860.2091043961. The cubic root of 140664560 is about 520.0697145191.

The spelling of 140664560 in words is "one hundred forty million, six hundred sixty-four thousand, five hundred sixty".