74161397 has 2 divisors, whose sum is σ = 74161398. Its totient is φ = 74161396.

The previous prime is 74161319. The next prime is 74161403. The reversal of 74161397 is 79316147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54037201 + 20124196 = 7351^2 + 4486^2 .

It is a cyclic number.

It is not a de Polignac number, because 74161397 - 2²⁰ = 73112821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74161397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74161097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37080698 + 37080699.

It is an arithmetic number, because the mean of its divisors is an integer number (37080699).

Almost surely, 2^74161397 is an apocalyptic number.

It is an amenable number.

74161397 is a deficient number, since it is larger than the sum of its proper divisors (1).

74161397 is an equidigital number, since it uses as much as digits as its factorization.

74161397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 74161397 is about 8611.7011675975. The cubic root of 74161397 is about 420.1386484804.

The spelling of 74161397 in words is "seventy-four million, one hundred sixty-one thousand, three hundred ninety-seven".