10665642 has 16 divisors (see below), whose sum is σ = 22972320. Its totient is φ = 3281712.

The previous prime is 10665637. The next prime is 10665661. The reversal of 10665642 is 24656601.

It is a super-2 number, since 2×10665642² = 227511838544328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68292 + ... + 68447.

It is an arithmetic number, because the mean of its divisors is an integer number (1435770).

Almost surely, 2^10665642 is an apocalyptic number.

10665642 is an abundant number, since it is smaller than the sum of its proper divisors (12306678).

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

10665642 is a wasteful number, since it uses less digits than its factorization.

10665642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136757.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 10665642 is about 3265.8294505378. The cubic root of 10665642 is about 220.1214343365.

The spelling of 10665642 in words is "ten million, six hundred sixty-five thousand, six hundred forty-two".