74656217 has 2 divisors, whose sum is σ = 74656218. Its totient is φ = 74656216.

The previous prime is 74656207. The next prime is 74656223. The reversal of 74656217 is 71265647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72863296 + 1792921 = 8536^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 74656217 - 2¹⁴ = 74639833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74656207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37328108 + 37328109.

It is an arithmetic number, because the mean of its divisors is an integer number (37328109).

Almost surely, 2^74656217 is an apocalyptic number.

It is an amenable number.

74656217 is a deficient number, since it is larger than the sum of its proper divisors (1).

74656217 is an equidigital number, since it uses as much as digits as its factorization.

74656217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 74656217 is about 8640.3829197554. The cubic root of 74656217 is about 421.0709949236.

The spelling of 74656217 in words is "seventy-four million, six hundred fifty-six thousand, two hundred seventeen".