10988661 has 4 divisors (see below), whose sum is σ = 14651552. Its totient is φ = 7325772.

The previous prime is 10988657. The next prime is 10988671. The reversal of 10988661 is 16688901.

10988661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 10988661 - 2² = 10988657 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 (10988611) 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, 1831441 + ... + 1831446.

It is an arithmetic number, because the mean of its divisors is an integer number (3662888).

Almost surely, 2^10988661 is an apocalyptic number.

It is an amenable number.

10988661 is a deficient number, since it is larger than the sum of its proper divisors (3662891).

10988661 is an equidigital number, since it uses as much as digits as its factorization.

10988661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662890.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 10988661 is about 3314.9149310352. The cubic root of 10988661 is about 222.3215654807.

The spelling of 10988661 in words is "ten million, nine hundred eighty-eight thousand, six hundred sixty-one".