87511849 has 16 divisors (see below), whose sum is σ = 93709440. Its totient is φ = 81544320.

The previous prime is 87511843. The next prime is 87511867. The reversal of 87511849 is 94811578.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87511849 - 2⁵ = 87511817 is a prime.

It is a Duffinian number.

Its product of digits (80640) is a multiple of the sum of its prime divisors (720).

It is not an unprimeable number, because it can be changed into a prime (87511843) 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, 167709 + ... + 168229.

It is an arithmetic number, because the mean of its divisors is an integer number (5856840).

Almost surely, 2^87511849 is an apocalyptic number.

It is an amenable number.

87511849 is a deficient number, since it is larger than the sum of its proper divisors (6197591).

87511849 is a wasteful number, since it uses less digits than its factorization.

87511849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

The product of its digits is 80640, while the sum is 43.

The square root of 87511849 is about 9354.7768011856. The cubic root of 87511849 is about 443.9720395373.

The spelling of 87511849 in words is "eighty-seven million, five hundred eleven thousand, eight hundred forty-nine".