37661166 has 32 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 12007512.

The previous prime is 37661101. The next prime is 37661201. The reversal of 37661166 is 66116673.

37661166 is a `hidden beast` number, since 37 + 6 + 611 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 37661166.

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, 13920 + ... + 16403.

It is an arithmetic number, because the mean of its divisors is an integer number (2729160).

Almost surely, 2^37661166 is an apocalyptic number.

37661166 is an abundant number, since it is smaller than the sum of its proper divisors (49671954).

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

37661166 is a wasteful number, since it uses less digits than its factorization.

37661166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30357 (or 30351 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 37661166 is about 6136.8693973393. The cubic root of 37661166 is about 335.1953000957.

The spelling of 37661166 in words is "thirty-seven million, six hundred sixty-one thousand, one hundred sixty-six".