10981664 has 12 divisors (see below), whose sum is σ = 21620214. Its totient is φ = 5490816.

The previous prime is 10981651. The next prime is 10981667. The reversal of 10981664 is 46618901.

It can be written as a sum of positive squares in only one way, i.e., 10837264 + 144400 = 3292^2 + 380^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (10981667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171557 + ... + 171620.

Almost surely, 2^10981664 is an apocalyptic number.

It is an amenable number.

10981664 is a deficient number, since it is larger than the sum of its proper divisors (10638550).

10981664 is an equidigital number, since it uses as much as digits as its factorization.

10981664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343187 (or 343179 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 10981664 is about 3313.8593814464. The cubic root of 10981664 is about 222.2743679109.

The spelling of 10981664 in words is "ten million, nine hundred eighty-one thousand, six hundred sixty-four".