74065987 has 2 divisors, whose sum is σ = 74065988. Its totient is φ = 74065986.

The previous prime is 74065969. The next prime is 74065997. The reversal of 74065987 is 78956047.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74065987 - 2²³ = 65677379 is a prime.

It is not a weakly prime, because it can be changed into another prime (74065907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37032993 + 37032994.

It is an arithmetic number, because the mean of its divisors is an integer number (37032994).

Almost surely, 2^74065987 is an apocalyptic number.

74065987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74065987 is an equidigital number, since it uses as much as digits as its factorization.

74065987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 74065987 is about 8606.1598288668. The cubic root of 74065987 is about 419.9583991298.

The spelling of 74065987 in words is "seventy-four million, sixty-five thousand, nine hundred eighty-seven".