37664939 has 8 divisors (see below), whose sum is σ = 41961360. Its totient is φ = 33568416.

The previous prime is 37664867. The next prime is 37664941. The reversal of 37664939 is 93946673.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37664939 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 37664893 and 37664902.

It is not an unprimeable number, because it can be changed into a prime (37664239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49577 + ... + 50330.

It is an arithmetic number, because the mean of its divisors is an integer number (5245170).

Almost surely, 2^37664939 is an apocalyptic number.

37664939 is a deficient number, since it is larger than the sum of its proper divisors (4296421).

37664939 is a wasteful number, since it uses less digits than its factorization.

37664939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99949.

The product of its digits is 734832, while the sum is 47.

The square root of 37664939 is about 6137.1767939338. The cubic root of 37664939 is about 335.2064933200.

The spelling of 37664939 in words is "thirty-seven million, six hundred sixty-four thousand, nine hundred thirty-nine".