74139587 has 8 divisors (see below), whose sum is σ = 75411456. Its totient is φ = 72872712.

The previous prime is 74139547. The next prime is 74139589. The reversal of 74139587 is 78593147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74139587 - 2¹⁰ = 74138563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74139589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39758 + ... + 41580.

It is an arithmetic number, because the mean of its divisors is an integer number (9426432).

Almost surely, 2^74139587 is an apocalyptic number.

74139587 is a deficient number, since it is larger than the sum of its proper divisors (1271869).

74139587 is a wasteful number, since it uses less digits than its factorization.

74139587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497.

The product of its digits is 211680, while the sum is 44.

The square root of 74139587 is about 8610.4347741563. The cubic root of 74139587 is about 420.0974584871.

The spelling of 74139587 in words is "seventy-four million, one hundred thirty-nine thousand, five hundred eighty-seven".