74974217 has 2 divisors, whose sum is σ = 74974218. Its totient is φ = 74974216.

The previous prime is 74974187. The next prime is 74974231. The reversal of 74974217 is 71247947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66324736 + 8649481 = 8144^2 + 2941^2 .

It is a cyclic number.

It is not a de Polignac number, because 74974217 - 2⁶ = 74974153 is a prime.

It is a super-2 number, since 2×74974217² = 11242266429526178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74974717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37487108 + 37487109.

It is an arithmetic number, because the mean of its divisors is an integer number (37487109).

Almost surely, 2^74974217 is an apocalyptic number.

It is an amenable number.

74974217 is a deficient number, since it is larger than the sum of its proper divisors (1).

74974217 is an equidigital number, since it uses as much as digits as its factorization.

74974217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The square root of 74974217 is about 8658.7653276896. The cubic root of 74974217 is about 421.6680021691.

The spelling of 74974217 in words is "seventy-four million, nine hundred seventy-four thousand, two hundred seventeen".