74691317 has 2 divisors, whose sum is σ = 74691318. Its totient is φ = 74691316.

The previous prime is 74691313. The next prime is 74691343. The reversal of 74691317 is 71319647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57168721 + 17522596 = 7561^2 + 4186^2 .

It is a cyclic number.

It is not a de Polignac number, because 74691317 - 2² = 74691313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74691311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37345658 + 37345659.

It is an arithmetic number, because the mean of its divisors is an integer number (37345659).

Almost surely, 2^74691317 is an apocalyptic number.

It is an amenable number.

74691317 is a deficient number, since it is larger than the sum of its proper divisors (1).

74691317 is an equidigital number, since it uses as much as digits as its factorization.

74691317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 74691317 is about 8642.4138410516. The cubic root of 74691317 is about 421.1369741409.

The spelling of 74691317 in words is "seventy-four million, six hundred ninety-one thousand, three hundred seventeen".