72316587 has 16 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 41279232.

The previous prime is 72316571. The next prime is 72316619. The reversal of 72316587 is 78561327.

It is not a de Polignac number, because 72316587 - 2⁴ = 72316571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72316567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37339 + ... + 39227.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^72316587 is an apocalyptic number.

72316587 is a deficient number, since it is larger than the sum of its proper divisors (37998933).

72316587 is a wasteful number, since it uses less digits than its factorization.

72316587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722.

The product of its digits is 70560, while the sum is 39.

The square root of 72316587 is about 8503.9159802999. The cubic root of 72316587 is about 416.6256207745.

The spelling of 72316587 in words is "seventy-two million, three hundred sixteen thousand, five hundred eighty-seven".