74715997 has 2 divisors, whose sum is σ = 74715998. Its totient is φ = 74715996.

The previous prime is 74715989. The next prime is 74716001. The reversal of 74715997 is 79951747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66814276 + 7901721 = 8174^2 + 2811^2 .

It is a cyclic number.

It is not a de Polignac number, because 74715997 - 2³ = 74715989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74715997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74715097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37357998 + 37357999.

It is an arithmetic number, because the mean of its divisors is an integer number (37357999).

Almost surely, 2^74715997 is an apocalyptic number.

It is an amenable number.

74715997 is a deficient number, since it is larger than the sum of its proper divisors (1).

74715997 is an equidigital number, since it uses as much as digits as its factorization.

74715997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 74715997 is about 8643.8415649525. The cubic root of 74715997 is about 421.1833539896.

The spelling of 74715997 in words is "seventy-four million, seven hundred fifteen thousand, nine hundred ninety-seven".