74864987 has 2 divisors, whose sum is σ = 74864988. Its totient is φ = 74864986.

The previous prime is 74864981. The next prime is 74865001. The reversal of 74864987 is 78946847.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74864987 - 2⁴ = 74864971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74864981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37432493 + 37432494.

It is an arithmetic number, because the mean of its divisors is an integer number (37432494).

Almost surely, 2^74864987 is an apocalyptic number.

74864987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74864987 is an equidigital number, since it uses as much as digits as its factorization.

74864987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 53.

The square root of 74864987 is about 8652.4555474154. The cubic root of 74864987 is about 421.4631264863.

The spelling of 74864987 in words is "seventy-four million, eight hundred sixty-four thousand, nine hundred eighty-seven".