10691668 has 24 divisors (see below), whose sum is σ = 20697992. Its totient is φ = 4800384.

The previous prime is 10691663. The next prime is 10691713. The reversal of 10691668 is 86619601.

It can be written as a sum of positive squares in 4 ways, for example, as 4401604 + 6290064 = 2098^2 + 2508^2 .

It is a super-2 number, since 2×10691668² = 228623529244448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10691663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855 + ... + 4702.

Almost surely, 2^10691668 is an apocalyptic number.

It is an amenable number.

10691668 is a deficient number, since it is larger than the sum of its proper divisors (10006324).

10691668 is a wasteful number, since it uses less digits than its factorization.

10691668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611 (or 5609 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 10691668 is about 3269.8116153687. The cubic root of 10691668 is about 220.3003336138.

The spelling of 10691668 in words is "ten million, six hundred ninety-one thousand, six hundred sixty-eight".