87670476 has 18 divisors (see below), whose sum is σ = 221611572. Its totient is φ = 29223480.

The previous prime is 87670459. The next prime is 87670477. The reversal of 87670476 is 67407678.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×87670476² = 15372224724133152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87670477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1217610 + ... + 1217681.

It is an arithmetic number, because the mean of its divisors is an integer number (12311754).

Almost surely, 2^87670476 is an apocalyptic number.

It is an amenable number.

87670476 is an abundant number, since it is smaller than the sum of its proper divisors (133941096).

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

87670476 is a wasteful number, since it uses less digits than its factorization.

87670476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435301 (or 2435296 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 87670476 is about 9363.2513583691. The cubic root of 87670476 is about 444.2401306364.

The spelling of 87670476 in words is "eighty-seven million, six hundred seventy thousand, four hundred seventy-six".