74644091 has 2 divisors, whose sum is σ = 74644092. Its totient is φ = 74644090.

The previous prime is 74644081. The next prime is 74644099. The reversal of 74644091 is 19044647.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74644091 - 2¹⁰ = 74643067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74644099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37322045 + 37322046.

It is an arithmetic number, because the mean of its divisors is an integer number (37322046).

Almost surely, 2^74644091 is an apocalyptic number.

74644091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74644091 is an equidigital number, since it uses as much as digits as its factorization.

74644091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 74644091 is about 8639.6811862476. The cubic root of 74644091 is about 421.0481962715.

The spelling of 74644091 in words is "seventy-four million, six hundred forty-four thousand, ninety-one".