11698881 has 16 divisors (see below), whose sum is σ = 16659456. Its totient is φ = 7284816.

The previous prime is 11698877. The next prime is 11698901. The reversal of 11698881 is 18889611.

It is not a de Polignac number, because 11698881 - 2² = 11698877 is a prime.

It is a super-2 number, since 2×11698881² = 273727633304322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11698801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (1041216).

Almost surely, 2^11698881 is an apocalyptic number.

It is an amenable number.

11698881 is a deficient number, since it is larger than the sum of its proper divisors (4960575).

11698881 is a wasteful number, since it uses less digits than its factorization.

11698881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012.

The product of its digits is 27648, while the sum is 42.

The square root of 11698881 is about 3420.3627000656. The cubic root of 11698881 is about 227.0116303951.

The spelling of 11698881 in words is "eleven million, six hundred ninety-eight thousand, eight hundred eighty-one".