140565897 has 12 divisors (see below), whose sum is σ = 203186880. Its totient is φ = 93642648.

The previous prime is 140565889. The next prime is 140565913. The reversal of 140565897 is 798565041.

140565897 is a `hidden beast` number, since 1 + 4 + 0 + 565 + 89 + 7 = 666.

It is not a de Polignac number, because 140565897 - 2³ = 140565889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140565847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9604 + ... + 19322.

It is an arithmetic number, because the mean of its divisors is an integer number (16932240).

Almost surely, 2^140565897 is an apocalyptic number.

It is an amenable number.

140565897 is a deficient number, since it is larger than the sum of its proper divisors (62620983).

140565897 is a wasteful number, since it uses less digits than its factorization.

140565897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332 (or 11329 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 140565897 is about 11856.0489624495. The cubic root of 140565897 is about 519.9480926984.

The spelling of 140565897 in words is "one hundred forty million, five hundred sixty-five thousand, eight hundred ninety-seven".