74718691 has 2 divisors, whose sum is σ = 74718692. Its totient is φ = 74718690.

The previous prime is 74718671. The next prime is 74718701. The reversal of 74718691 is 19681747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74718691 - 2¹⁹ = 74194403 is a prime.

It is not a weakly prime, because it can be changed into another prime (74718671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37359345 + 37359346.

It is an arithmetic number, because the mean of its divisors is an integer number (37359346).

Almost surely, 2^74718691 is an apocalyptic number.

74718691 is a deficient number, since it is larger than the sum of its proper divisors (1).

74718691 is an equidigital number, since it uses as much as digits as its factorization.

74718691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 43.

The square root of 74718691 is about 8643.9973970380. The cubic root of 74718691 is about 421.1884160663.

The spelling of 74718691 in words is "seventy-four million, seven hundred eighteen thousand, six hundred ninety-one".