74997859 has 2 divisors, whose sum is σ = 74997860. Its totient is φ = 74997858.

The previous prime is 74997851. The next prime is 74997913. The reversal of 74997859 is 95879947.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74997859 - 2³ = 74997851 is a prime.

It is not a weakly prime, because it can be changed into another prime (74997851) 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, 37498929 + 37498930.

It is an arithmetic number, because the mean of its divisors is an integer number (37498930).

Almost surely, 2^74997859 is an apocalyptic number.

74997859 is a deficient number, since it is larger than the sum of its proper divisors (1).

74997859 is an equidigital number, since it uses as much as digits as its factorization.

74997859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 58.

The square root of 74997859 is about 8660.1304262696. The cubic root of 74997859 is about 421.7123197475.

The spelling of 74997859 in words is "seventy-four million, nine hundred ninety-seven thousand, eight hundred fifty-nine".