240606660 has 72 divisors (see below), whose sum is σ = 783699840. Its totient is φ = 54995136.

The previous prime is 240606647. The next prime is 240606679. The reversal of 240606660 is 66606042.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37980 + ... + 43859.

It is an arithmetic number, because the mean of its divisors is an integer number (10884720).

Almost surely, 2^240606660 is an apocalyptic number.

240606660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240606660 is an abundant number, since it is smaller than the sum of its proper divisors (543093180).

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

240606660 is a wasteful number, since it uses less digits than its factorization.

240606660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81865 (or 81856 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 240606660 is about 15511.5008944976. The cubic root of 240606660 is about 621.9696810799.

The spelling of 240606660 in words is "two hundred forty million, six hundred six thousand, six hundred sixty".