11615997 has 8 divisors (see below), whose sum is σ = 15865920. Its totient is φ = 7555040.

The previous prime is 11615993. The next prime is 11615999. The reversal of 11615997 is 79951611.

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 11615997 - 2² = 11615993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11615993) 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, 47097 + ... + 47342.

It is an arithmetic number, because the mean of its divisors is an integer number (1983240).

Almost surely, 2^11615997 is an apocalyptic number.

It is an amenable number.

11615997 is a deficient number, since it is larger than the sum of its proper divisors (4249923).

11615997 is an equidigital number, since it uses as much as digits as its factorization.

11615997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94483.

The product of its digits is 17010, while the sum is 39.

The square root of 11615997 is about 3408.2249045508. The cubic root of 11615997 is about 226.4742501513.

The spelling of 11615997 in words is "eleven million, six hundred fifteen thousand, nine hundred ninety-seven".