74136217 has 2 divisors, whose sum is σ = 74136218. Its totient is φ = 74136216.

The previous prime is 74136193. The next prime is 74136229. The reversal of 74136217 is 71263147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71978256 + 2157961 = 8484^2 + 1469^2 .

It is a cyclic number.

It is not a de Polignac number, because 74136217 - 2⁷ = 74136089 is a prime.

It is not a weakly prime, because it can be changed into another prime (74136247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37068108 + 37068109.

It is an arithmetic number, because the mean of its divisors is an integer number (37068109).

Almost surely, 2^74136217 is an apocalyptic number.

It is an amenable number.

74136217 is a deficient number, since it is larger than the sum of its proper divisors (1).

74136217 is an equidigital number, since it uses as much as digits as its factorization.

74136217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 74136217 is about 8610.2390791429. The cubic root of 74136217 is about 420.0910932422.

The spelling of 74136217 in words is "seventy-four million, one hundred thirty-six thousand, two hundred seventeen".