11761857 has 6 divisors (see below), whose sum is σ = 16989362. Its totient is φ = 7841232.

The previous prime is 11761853. The next prime is 11761859. The reversal of 11761857 is 75816711.

It is a happy number.

11761857 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 only one way, i.e., 9790641 + 1971216 = 3129^2 + 1404^2 .

It is not a de Polignac number, because 11761857 - 2² = 11761853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11761853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653428 + ... + 653445.

Almost surely, 2^11761857 is an apocalyptic number.

It is an amenable number.

11761857 is a deficient number, since it is larger than the sum of its proper divisors (5227505).

11761857 is a wasteful number, since it uses less digits than its factorization.

11761857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306879 (or 1306876 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The square root of 11761857 is about 3429.5563853070. The cubic root of 11761857 is about 227.4182421671.

The spelling of 11761857 in words is "eleven million, seven hundred sixty-one thousand, eight hundred fifty-seven".