240396665 has 16 divisors (see below), whose sum is σ = 295368336. Its totient is φ = 187776000.

The previous prime is 240396619. The next prime is 240396679. The reversal of 240396665 is 566693042.

240396665 = 10963² + 10964².

240396665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 57714409 + 182682256 = 7597^2 + 13516^2 .

It is not a de Polignac number, because 240396665 - 2²⁶ = 173287801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33605 + ... + 40125.

It is an arithmetic number, because the mean of its divisors is an integer number (18460521).

Almost surely, 2^240396665 is an apocalyptic number.

240396665 is the 10964-th centered square number.

It is an amenable number.

240396665 is a deficient number, since it is larger than the sum of its proper divisors (54971671).

240396665 is a wasteful number, since it uses less digits than its factorization.

240396665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 240396665 is about 15504.7304072015. The cubic root of 240396665 is about 621.7886822949.

The spelling of 240396665 in words is "two hundred forty million, three hundred ninety-six thousand, six hundred sixty-five".