74985397 has 2 divisors, whose sum is σ = 74985398. Its totient is φ = 74985396.

The previous prime is 74985377. The next prime is 74985413. The reversal of 74985397 is 79358947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 7761796 = 8199^2 + 2786^2 .

It is a cyclic number.

It is not a de Polignac number, because 74985397 - 2¹⁵ = 74952629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74985307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37492698 + 37492699.

It is an arithmetic number, because the mean of its divisors is an integer number (37492699).

Almost surely, 2^74985397 is an apocalyptic number.

It is an amenable number.

74985397 is a deficient number, since it is larger than the sum of its proper divisors (1).

74985397 is an equidigital number, since it uses as much as digits as its factorization.

74985397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 52.

The square root of 74985397 is about 8659.4108922028. The cubic root of 74985397 is about 421.6889605472.

The spelling of 74985397 in words is "seventy-four million, nine hundred eighty-five thousand, three hundred ninety-seven".