74070397 has 2 divisors, whose sum is σ = 74070398. Its totient is φ = 74070396.

The previous prime is 74070371. The next prime is 74070431. The reversal of 74070397 is 79307047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58813561 + 15256836 = 7669^2 + 3906^2 .

It is an emirp because it is prime and its reverse (79307047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74070397 - 2²³ = 65681789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74070317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37035198 + 37035199.

It is an arithmetic number, because the mean of its divisors is an integer number (37035199).

Almost surely, 2^74070397 is an apocalyptic number.

It is an amenable number.

74070397 is a deficient number, since it is larger than the sum of its proper divisors (1).

74070397 is an equidigital number, since it uses as much as digits as its factorization.

74070397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 74070397 is about 8606.4160368878. The cubic root of 74070397 is about 419.9667339488.

The spelling of 74070397 in words is "seventy-four million, seventy thousand, three hundred ninety-seven".