74786897 has 2 divisors, whose sum is σ = 74786898. Its totient is φ = 74786896.

The previous prime is 74786867. The next prime is 74786909. The reversal of 74786897 is 79868747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48664576 + 26122321 = 6976^2 + 5111^2 .

It is a cyclic number.

It is not a de Polignac number, because 74786897 - 2¹² = 74782801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74786857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37393448 + 37393449.

It is an arithmetic number, because the mean of its divisors is an integer number (37393449).

Almost surely, 2^74786897 is an apocalyptic number.

It is an amenable number.

74786897 is a deficient number, since it is larger than the sum of its proper divisors (1).

74786897 is an equidigital number, since it uses as much as digits as its factorization.

74786897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 56.

The square root of 74786897 is about 8647.9417782499. The cubic root of 74786897 is about 421.3165359069.

The spelling of 74786897 in words is "seventy-four million, seven hundred eighty-six thousand, eight hundred ninety-seven".