74384987 has 2 divisors, whose sum is σ = 74384988. Its totient is φ = 74384986.

The previous prime is 74384963. The next prime is 74384993. The reversal of 74384987 is 78948347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74384987 - 2⁶ = 74384923 is a prime.

It is not a weakly prime, because it can be changed into another prime (74384957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37192493 + 37192494.

It is an arithmetic number, because the mean of its divisors is an integer number (37192494).

Almost surely, 2^74384987 is an apocalyptic number.

74384987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74384987 is an equidigital number, since it uses as much as digits as its factorization.

74384987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 50.

The square root of 74384987 is about 8624.6731532273. The cubic root of 74384987 is about 420.5604517200.

The spelling of 74384987 in words is "seventy-four million, three hundred eighty-four thousand, nine hundred eighty-seven".