260442666 has 24 divisors (see below), whose sum is σ = 615592224. Its totient is φ = 78921960.

The previous prime is 260442659. The next prime is 260442691. The reversal of 260442666 is 666244062.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 260442666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 657486 + ... + 657881.

It is an arithmetic number, because the mean of its divisors is an integer number (25649676).

Almost surely, 2^260442666 is an apocalyptic number.

260442666 is an abundant number, since it is smaller than the sum of its proper divisors (355149558).

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

260442666 is a wasteful number, since it uses less digits than its factorization.

260442666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315386 (or 1315383 counting only the distinct ones).

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

The square root of 260442666 is about 16138.2361489724. The cubic root of 260442666 is about 638.6124447241.

The spelling of 260442666 in words is "two hundred sixty million, four hundred forty-two thousand, six hundred sixty-six".