37213664 has 12 divisors (see below), whose sum is σ = 73264464. Its totient is φ = 18606816.

The previous prime is 37213643. The next prime is 37213669. The reversal of 37213664 is 46631273.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1162927 = 37213664 / (3 + 7 + 2 + 1 + 3 + 6 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 37213664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37213669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581432 + ... + 581495.

It is an arithmetic number, because the mean of its divisors is an integer number (6105372).

Almost surely, 2^37213664 is an apocalyptic number.

It is an amenable number.

37213664 is a deficient number, since it is larger than the sum of its proper divisors (36050800).

37213664 is a wasteful number, since it uses less digits than its factorization.

37213664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162937 (or 1162929 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 37213664 is about 6100.3003204760. The cubic root of 37213664 is about 333.8623741255.

The spelling of 37213664 in words is "thirty-seven million, two hundred thirteen thousand, six hundred sixty-four".