74019997 has 2 divisors, whose sum is σ = 74019998. Its totient is φ = 74019996.

The previous prime is 74019961. The next prime is 74020007. The reversal of 74019997 is 79991047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47692836 + 26327161 = 6906^2 + 5131^2 .

It is a cyclic number.

It is not a de Polignac number, because 74019997 - 2²³ = 65631389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74019937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37009998 + 37009999.

It is an arithmetic number, because the mean of its divisors is an integer number (37009999).

Almost surely, 2^74019997 is an apocalyptic number.

It is an amenable number.

74019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

74019997 is an equidigital number, since it uses as much as digits as its factorization.

74019997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 74019997 is about 8603.4874905471. The cubic root of 74019997 is about 419.8714591524.

The spelling of 74019997 in words is "seventy-four million, nineteen thousand, nine hundred ninety-seven".