66373317 has 16 divisors (see below), whose sum is σ = 99348480. Its totient is φ = 43790976.

The previous prime is 66373313. The next prime is 66373319. The reversal of 66373317 is 71337366.

66373317 is a `hidden beast` number, since 6 + 637 + 3 + 3 + 17 = 666.

It is not a de Polignac number, because 66373317 - 2² = 66373313 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66373313) 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, 10053 + ... + 15290.

It is an arithmetic number, because the mean of its divisors is an integer number (6209280).

Almost surely, 2^66373317 is an apocalyptic number.

It is an amenable number.

66373317 is a deficient number, since it is larger than the sum of its proper divisors (32975163).

66373317 is a wasteful number, since it uses less digits than its factorization.

66373317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25449 (or 25443 counting only the distinct ones).

The product of its digits is 47628, while the sum is 36.

The square root of 66373317 is about 8146.9820792733. The cubic root of 66373317 is about 404.8845212602.

The spelling of 66373317 in words is "sixty-six million, three hundred seventy-three thousand, three hundred seventeen".