240626664 has 24 divisors (see below), whose sum is σ = 651697410. Its totient is φ = 80208864.

The previous prime is 240626647. The next prime is 240626669. The reversal of 240626664 is 466626042.

It can be written as a sum of positive squares in only one way, i.e., 240560100 + 66564 = 15510^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (240626669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1670947 + ... + 1671090.

Almost surely, 2^240626664 is an apocalyptic number.

240626664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

240626664 is an abundant number, since it is smaller than the sum of its proper divisors (411070746).

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

240626664 is a wasteful number, since it uses less digits than its factorization.

240626664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342049 (or 3342042 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 240626664 is about 15512.1456929723. The cubic root of 240626664 is about 621.9869174228.

The spelling of 240626664 in words is "two hundred forty million, six hundred twenty-six thousand, six hundred sixty-four".