74668091 has 2 divisors, whose sum is σ = 74668092. Its totient is φ = 74668090.

The previous prime is 74668049. The next prime is 74668103. The reversal of 74668091 is 19086647.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74668091 - 2²² = 70473787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (74668001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37334045 + 37334046.

It is an arithmetic number, because the mean of its divisors is an integer number (37334046).

Almost surely, 2^74668091 is an apocalyptic number.

74668091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74668091 is an equidigital number, since it uses as much as digits as its factorization.

74668091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 74668091 is about 8641.0700147609. The cubic root of 74668091 is about 421.0933173867.

The spelling of 74668091 in words is "seventy-four million, six hundred sixty-eight thousand, ninety-one".