74787091 has 2 divisors, whose sum is σ = 74787092. Its totient is φ = 74787090.

The previous prime is 74787077. The next prime is 74787121. The reversal of 74787091 is 19078747.

It is a weak prime.

It is an emirp because it is prime and its reverse (19078747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74787091 - 2¹¹ = 74785043 is a prime.

It is not a weakly prime, because it can be changed into another prime (74787061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37393545 + 37393546.

It is an arithmetic number, because the mean of its divisors is an integer number (37393546).

Almost surely, 2^74787091 is an apocalyptic number.

74787091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74787091 is an equidigital number, since it uses as much as digits as its factorization.

74787091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 74787091 is about 8647.9529947844. The cubic root of 74787091 is about 421.3169002102.

The spelling of 74787091 in words is "seventy-four million, seven hundred eighty-seven thousand, ninety-one".