10690681 has 4 divisors (see below), whose sum is σ = 10756432. Its totient is φ = 10624932.

The previous prime is 10690663. The next prime is 10690697. The reversal of 10690681 is 18609601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10690681 is a prime.

It is a super-2 number, since 2×10690681² = 228581320487522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10690621) 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, 32631 + ... + 32956.

It is an arithmetic number, because the mean of its divisors is an integer number (2689108).

Almost surely, 2^10690681 is an apocalyptic number.

It is an amenable number.

10690681 is a deficient number, since it is larger than the sum of its proper divisors (65751).

10690681 is an equidigital number, since it uses as much as digits as its factorization.

10690681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65750.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 10690681 is about 3269.6606857593. The cubic root of 10690681 is about 220.2935544059.

The spelling of 10690681 in words is "ten million, six hundred ninety thousand, six hundred eighty-one".