74975897 has 2 divisors, whose sum is σ = 74975898. Its totient is φ = 74975896.

The previous prime is 74975869. The next prime is 74975903. The reversal of 74975897 is 79857947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72403081 + 2572816 = 8509^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 74975897 - 2⁶ = 74975833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74975827) 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, 37487948 + 37487949.

It is an arithmetic number, because the mean of its divisors is an integer number (37487949).

Almost surely, 2^74975897 is an apocalyptic number.

It is an amenable number.

74975897 is a deficient number, since it is larger than the sum of its proper divisors (1).

74975897 is an equidigital number, since it uses as much as digits as its factorization.

74975897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 56.

The square root of 74975897 is about 8658.8623386678. The cubic root of 74975897 is about 421.6711516827.

The spelling of 74975897 in words is "seventy-four million, nine hundred seventy-five thousand, eight hundred ninety-seven".