74197493 has 2 divisors, whose sum is σ = 74197494. Its totient is φ = 74197492.

The previous prime is 74197481. The next prime is 74197523. The reversal of 74197493 is 39479147.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37920964 + 36276529 = 6158^2 + 6023^2 .

It is a cyclic number.

It is not a de Polignac number, because 74197493 - 2⁸ = 74197237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74197433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37098746 + 37098747.

It is an arithmetic number, because the mean of its divisors is an integer number (37098747).

Almost surely, 2^74197493 is an apocalyptic number.

It is an amenable number.

74197493 is a deficient number, since it is larger than the sum of its proper divisors (1).

74197493 is an equidigital number, since it uses as much as digits as its factorization.

74197493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 74197493 is about 8613.7966658147. The cubic root of 74197493 is about 420.2068010302.

The spelling of 74197493 in words is "seventy-four million, one hundred ninety-seven thousand, four hundred ninety-three".