87855878 has 16 divisors (see below), whose sum is σ = 146824704. Its totient is φ = 39084360.

The previous prime is 87855869. The next prime is 87855917.

It is a happy number.

87855878 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41450 + ... + 43517.

It is an arithmetic number, because the mean of its divisors is an integer number (9176544).

Almost surely, 2^87855878 is an apocalyptic number.

87855878 is a deficient number, since it is larger than the sum of its proper divisors (58968826).

87855878 is a wasteful number, since it uses less digits than its factorization.

87855878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85027.

The product of its digits is 5017600, while the sum is 56.

The square root of 87855878 is about 9373.1466434704. The cubic root of 87855878 is about 444.5530638732.

The spelling of 87855878 in words is "eighty-seven million, eight hundred fifty-five thousand, eight hundred seventy-eight".