240664545 has 48 divisors (see below), whose sum is σ = 479044800. Its totient is φ = 110540160.

The previous prime is 240664519. The next prime is 240664549. The reversal of 240664545 is 545466042.

240664545 is a `hidden beast` number, since 2 + 4 + 0 + 6 + 645 + 4 + 5 = 666.

It is not a de Polignac number, because 240664545 - 2⁵ = 240664513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240664549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3390 + ... + 22199.

It is an arithmetic number, because the mean of its divisors is an integer number (9980100).

Almost surely, 2^240664545 is an apocalyptic number.

It is an amenable number.

240664545 is a deficient number, since it is larger than the sum of its proper divisors (238380255).

240664545 is a wasteful number, since it uses less digits than its factorization.

240664545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25630 (or 25627 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 240664545 is about 15513.3666558874. The cubic root of 240664545 is about 622.0195547731.

The spelling of 240664545 in words is "two hundred forty million, six hundred sixty-four thousand, five hundred forty-five".