87800895 has 96 divisors (see below), whose sum is σ = 195733440. Its totient is φ = 37013760.

The previous prime is 87800891. The next prime is 87800929. The reversal of 87800895 is 59800878.

It is not a de Polignac number, because 87800895 - 2² = 87800891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87800895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87800891) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 85485 + ... + 86505.

It is an arithmetic number, because the mean of its divisors is an integer number (2038890).

Almost surely, 2^87800895 is an apocalyptic number.

87800895 is an abundant number, since it is smaller than the sum of its proper divisors (107932545).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87800895 is a wasteful number, since it uses less digits than its factorization.

87800895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 87800895 is about 9370.2131779378. The cubic root of 87800895 is about 444.4603060427.

The spelling of 87800895 in words is "eighty-seven million, eight hundred thousand, eight hundred ninety-five".