37668746 has 4 divisors (see below), whose sum is σ = 56503122. Its totient is φ = 18834372.

The previous prime is 37668721. The next prime is 37668749. The reversal of 37668746 is 64786673.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19936225 + 17732521 = 4465^2 + 4211^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 37668746.

It is not an unprimeable number, because it can be changed into a prime (37668749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9417185 + ... + 9417188.

Almost surely, 2^37668746 is an apocalyptic number.

37668746 is a deficient number, since it is larger than the sum of its proper divisors (18834376).

37668746 is a wasteful number, since it uses less digits than its factorization.

37668746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18834375.

The product of its digits is 1016064, while the sum is 47.

The square root of 37668746 is about 6137.4869449963. The cubic root of 37668746 is about 335.2177866533.

The spelling of 37668746 in words is "thirty-seven million, six hundred sixty-eight thousand, seven hundred forty-six".