74590987 has 4 divisors (see below), whose sum is σ = 77163120. Its totient is φ = 72018856.

The previous prime is 74590973. The next prime is 74590993. The reversal of 74590987 is 78909547.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74590987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74590987.

It is not an unprimeable number, because it can be changed into a prime (74590487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286023 + ... + 1286080.

It is an arithmetic number, because the mean of its divisors is an integer number (19290780).

Almost surely, 2^74590987 is an apocalyptic number.

74590987 is a deficient number, since it is larger than the sum of its proper divisors (2572133).

74590987 is a wasteful number, since it uses less digits than its factorization.

74590987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572132.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 74590987 is about 8636.6073779002. The cubic root of 74590987 is about 420.9483238968.

The spelling of 74590987 in words is "seventy-four million, five hundred ninety thousand, nine hundred eighty-seven".