74722393 has 2 divisors, whose sum is σ = 74722394. Its totient is φ = 74722392.

The previous prime is 74722381. The next prime is 74722397. The reversal of 74722393 is 39322747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71859529 + 2862864 = 8477^2 + 1692^2 .

It is a cyclic number.

It is not a de Polignac number, because 74722393 - 2²⁵ = 41167961 is a prime.

It is a super-3 number, since 3×74722393³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (74722397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37361196 + 37361197.

It is an arithmetic number, because the mean of its divisors is an integer number (37361197).

Almost surely, 2^74722393 is an apocalyptic number.

It is an amenable number.

74722393 is a deficient number, since it is larger than the sum of its proper divisors (1).

74722393 is an equidigital number, since it uses as much as digits as its factorization.

74722393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 37.

The square root of 74722393 is about 8644.2115314238. The cubic root of 74722393 is about 421.1953719955.

The spelling of 74722393 in words is "seventy-four million, seven hundred twenty-two thousand, three hundred ninety-three".