10665988 has 12 divisors (see below), whose sum is σ = 18692352. Its totient is φ = 5325320.

The previous prime is 10665983. The next prime is 10666001. The reversal of 10665988 is 88956601.

It is a super-2 number, since 2×10665988² = 227526600032288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10665983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181 + ... + 5107.

It is an arithmetic number, because the mean of its divisors is an integer number (1557696).

Almost surely, 2^10665988 is an apocalyptic number.

It is an amenable number.

10665988 is a deficient number, since it is larger than the sum of its proper divisors (8026364).

10665988 is a wasteful number, since it uses less digits than its factorization.

10665988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842 (or 3840 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 10665988 is about 3265.8824228683. The cubic root of 10665988 is about 220.1238146024.

The spelling of 10665988 in words is "ten million, six hundred sixty-five thousand, nine hundred eighty-eight".