11951766 has 32 divisors (see below), whose sum is σ = 27717120. Its totient is φ = 3810312.

The previous prime is 11951761. The next prime is 11951767. The reversal of 11951766 is 66715911.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11951766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11951761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3570 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (866160).

Almost surely, 2^11951766 is an apocalyptic number.

11951766 is an abundant number, since it is smaller than the sum of its proper divisors (15765354).

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

11951766 is a wasteful number, since it uses less digits than its factorization.

11951766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657 (or 9651 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 11951766 is about 3457.1326269034. The cubic root of 11951766 is about 228.6356913431.

The spelling of 11951766 in words is "eleven million, nine hundred fifty-one thousand, seven hundred sixty-six".