11577897 has 20 divisors (see below), whose sum is σ = 18208080. Its totient is φ = 7311384.

The previous prime is 11577893. The next prime is 11577959. The reversal of 11577897 is 79877511.

It is a happy number.

It is not a de Polignac number, because 11577897 - 2² = 11577893 is a prime.

It is a super-3 number, since 3×11577897³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11577893) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2223 + ... + 5300.

It is an arithmetic number, because the mean of its divisors is an integer number (910404).

Almost surely, 2^11577897 is an apocalyptic number.

It is an amenable number.

11577897 is a deficient number, since it is larger than the sum of its proper divisors (6630183).

11577897 is an equidigital number, since it uses as much as digits as its factorization.

11577897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7554 (or 7545 counting only the distinct ones).

The product of its digits is 123480, while the sum is 45.

The square root of 11577897 is about 3402.6308938820. The cubic root of 11577897 is about 226.2263701500.

The spelling of 11577897 in words is "eleven million, five hundred seventy-seven thousand, eight hundred ninety-seven".