11778966 has 32 divisors (see below), whose sum is σ = 26294400. Its totient is φ = 3908520.

The previous prime is 11778953. The next prime is 11778973. The reversal of 11778966 is 66987711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17545 + ... + 18203.

It is an arithmetic number, because the mean of its divisors is an integer number (821700).

Almost surely, 2^11778966 is an apocalyptic number.

11778966 is an abundant number, since it is smaller than the sum of its proper divisors (14515434).

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

11778966 is a wasteful number, since it uses less digits than its factorization.

11778966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 995 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 11778966 is about 3432.0498248132. The cubic root of 11778966 is about 227.5284575761.

It can be divided in two parts, 117789 and 66, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 11778966 in words is "eleven million, seven hundred seventy-eight thousand, nine hundred sixty-six".