10990661 has 8 divisors (see below), whose sum is σ = 12154944. Its totient is φ = 9853920.

The previous prime is 10990649. The next prime is 10990667. The reversal of 10990661 is 16609901.

It is a happy number.

10990661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10990661 - 2⁶ = 10990597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10990667) 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, 6041 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (1519368).

Almost surely, 2^10990661 is an apocalyptic number.

10990661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10990661 is a deficient number, since it is larger than the sum of its proper divisors (1164283).

10990661 is a wasteful number, since it uses less digits than its factorization.

10990661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13771.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 10990661 is about 3315.2165841767. The cubic root of 10990661 is about 222.3350526003.

The spelling of 10990661 in words is "ten million, nine hundred ninety thousand, six hundred sixty-one".