74685307 has 2 divisors, whose sum is σ = 74685308. Its totient is φ = 74685306.

The previous prime is 74685253. The next prime is 74685319. The reversal of 74685307 is 70358647.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74685307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74685307.

It is not a weakly prime, because it can be changed into another prime (74685337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37342653 + 37342654.

It is an arithmetic number, because the mean of its divisors is an integer number (37342654).

Almost surely, 2^74685307 is an apocalyptic number.

74685307 is a deficient number, since it is larger than the sum of its proper divisors (1).

74685307 is an equidigital number, since it uses as much as digits as its factorization.

74685307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 74685307 is about 8642.0661302723. The cubic root of 74685307 is about 421.1256783116.

The spelling of 74685307 in words is "seventy-four million, six hundred eighty-five thousand, three hundred seven".