11777868 has 18 divisors (see below), whose sum is σ = 29771924. Its totient is φ = 3925944.

The previous prime is 11777867. The next prime is 11777869. The reversal of 11777868 is 86877711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11777867) and next prime (11777869).

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (11777867) 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, 163546 + ... + 163617.

Almost surely, 2^11777868 is an apocalyptic number.

11777868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11777868 is an abundant number, since it is smaller than the sum of its proper divisors (17994056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11777868 is a wasteful number, since it uses less digits than its factorization.

11777868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327173 (or 327168 counting only the distinct ones).

The product of its digits is 131712, while the sum is 45.

The square root of 11777868 is about 3431.8898583725. The cubic root of 11777868 is about 227.5213875155.

It can be divided in two parts, 1177 and 7868, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 11777868 in words is "eleven million, seven hundred seventy-seven thousand, eight hundred sixty-eight".