11662978 has 8 divisors (see below), whose sum is σ = 18255168. Its totient is φ = 5577924.

The previous prime is 11662927. The next prime is 11662993. The reversal of 11662978 is 87926611.

11662978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11662978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126726 + ... + 126817.

It is an arithmetic number, because the mean of its divisors is an integer number (2281896).

Almost surely, 2^11662978 is an apocalyptic number.

11662978 is a deficient number, since it is larger than the sum of its proper divisors (6592190).

11662978 is a wasteful number, since it uses less digits than its factorization.

11662978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253568.

The product of its digits is 36288, while the sum is 40.

The square root of 11662978 is about 3415.1102471223. The cubic root of 11662978 is about 226.7791651286.

The spelling of 11662978 in words is "eleven million, six hundred sixty-two thousand, nine hundred seventy-eight".