240628665 has 16 divisors (see below), whose sum is σ = 397426176. Its totient is φ = 124195200.

The previous prime is 240628657. The next prime is 240628667. The reversal of 240628665 is 566826042.

It is not a de Polignac number, because 240628665 - 2³ = 240628657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240628667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258276 + ... + 259205.

It is an arithmetic number, because the mean of its divisors is an integer number (24839136).

Almost surely, 2^240628665 is an apocalyptic number.

It is an amenable number.

240628665 is a deficient number, since it is larger than the sum of its proper divisors (156797511).

240628665 is a wasteful number, since it uses less digits than its factorization.

240628665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517520.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 240628665 is about 15512.2101906853. The cubic root of 240628665 is about 621.9886415215.

The spelling of 240628665 in words is "two hundred forty million, six hundred twenty-eight thousand, six hundred sixty-five".