666242410 has 64 divisors (see below), whose sum is σ = 1342915200. Its totient is φ = 236500992.

The previous prime is 666242399. The next prime is 666242441. The reversal of 666242410 is 14242666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1010661 + ... + 1011319.

It is an arithmetic number, because the mean of its divisors is an integer number (20983050).

Almost surely, 2^666242410 is an apocalyptic number.

666242410 is an abundant number, since it is smaller than the sum of its proper divisors (676672790).

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

666242410 is a wasteful number, since it uses less digits than its factorization.

666242410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 666242410 is about 25811.6719721912. The cubic root of 666242410 is about 873.3951142446.

The spelling of 666242410 in words is "six hundred sixty-six million, two hundred forty-two thousand, four hundred ten".