74691467987 has 2 divisors, whose sum is σ = 74691467988. Its totient is φ = 74691467986.

The previous prime is 74691467947. The next prime is 74691467999. The reversal of 74691467987 is 78976419647.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74691467987 - 2²⁴ = 74674690771 is a prime.

It is a super-3 number, since 3×74691467987³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (74691467927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37345733993 + 37345733994.

It is an arithmetic number, because the mean of its divisors is an integer number (37345733994).

Almost surely, 2^74691467987 is an apocalyptic number.

74691467987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74691467987 is an equidigital number, since it uses as much as digits as its factorization.

74691467987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128024064, while the sum is 68.

The spelling of 74691467987 in words is "seventy-four billion, six hundred ninety-one million, four hundred sixty-seven thousand, nine hundred eighty-seven".