11557690 has 16 divisors (see below), whose sum is σ = 21366792. Its totient is φ = 4497984.

The previous prime is 11557673. The next prime is 11557697. The reversal of 11557690 is 9675511.

11557690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11553201 + 4489 = 3399^2 + 67^2 .

It is a super-2 number, since 2×11557690² = 267160396272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11557697) 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, 15249 + ... + 15988.

Almost surely, 2^11557690 is an apocalyptic number.

11557690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11557690 is a deficient number, since it is larger than the sum of its proper divisors (9809102).

11557690 is a wasteful number, since it uses less digits than its factorization.

11557690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31281.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 11557690 is about 3399.6602771454. The cubic root of 11557690 is about 226.0946819192.

The spelling of 11557690 in words is "eleven million, five hundred fifty-seven thousand, six hundred ninety".