87823897 has 16 divisors (see below), whose sum is σ = 102051712. Its totient is φ = 74027520.

The previous prime is 87823873. The next prime is 87823937. The reversal of 87823897 is 79832878.

It is not a de Polignac number, because 87823897 - 2¹¹ = 87821849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87823817) 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, 142963 + ... + 143575.

It is an arithmetic number, because the mean of its divisors is an integer number (6378232).

Almost surely, 2^87823897 is an apocalyptic number.

It is an amenable number.

87823897 is a deficient number, since it is larger than the sum of its proper divisors (14227815).

87823897 is a wasteful number, since it uses less digits than its factorization.

87823897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its digits is 1354752, while the sum is 52.

The square root of 87823897 is about 9371.4404975969. The cubic root of 87823897 is about 444.4991157584.

The spelling of 87823897 in words is "eighty-seven million, eight hundred twenty-three thousand, eight hundred ninety-seven".