87516719 has 4 divisors (see below), whose sum is σ = 87664896. Its totient is φ = 87368544.

The previous prime is 87516713. The next prime is 87516743. The reversal of 87516719 is 91761578.

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

It is a cyclic number.

It is not a de Polignac number, because 87516719 - 2⁴ = 87516703 is a prime.

It is a super-2 number, since 2×87516719² = 15318352209049922, which contains 22 as substring.

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 87516719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87516713) 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, 73199 + ... + 74384.

It is an arithmetic number, because the mean of its divisors is an integer number (21916224).

Almost surely, 2^87516719 is an apocalyptic number.

87516719 is a deficient number, since it is larger than the sum of its proper divisors (148177).

87516719 is a wasteful number, since it uses less digits than its factorization.

87516719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148176.

The product of its digits is 105840, while the sum is 44.

The square root of 87516719 is about 9355.0370923904. The cubic root of 87516719 is about 443.9802750077.

The spelling of 87516719 in words is "eighty-seven million, five hundred sixteen thousand, seven hundred nineteen".