11697988 has 6 divisors (see below), whose sum is σ = 20471486. Its totient is φ = 5848992.

The previous prime is 11697979. The next prime is 11698009. The reversal of 11697988 is 88979611.

It can be written as a sum of positive squares in only one way, i.e., 8282884 + 3415104 = 2878^2 + 1848^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1462245 + ... + 1462252.

Almost surely, 2^11697988 is an apocalyptic number.

It is an amenable number.

11697988 is a deficient number, since it is larger than the sum of its proper divisors (8773498).

11697988 is a wasteful number, since it uses less digits than its factorization.

11697988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924501 (or 2924499 counting only the distinct ones).

The product of its digits is 217728, while the sum is 49.

The square root of 11697988 is about 3420.2321558631. The cubic root of 11697988 is about 227.0058541576.

The spelling of 11697988 in words is "eleven million, six hundred ninety-seven thousand, nine hundred eighty-eight".