87646380 has 24 divisors (see below), whose sum is σ = 245410032. Its totient is φ = 23372352.

The previous prime is 87646369. The next prime is 87646409. The reversal of 87646380 is 8364678.

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, 730327 + ... + 730446.

It is an arithmetic number, because the mean of its divisors is an integer number (10225418).

Almost surely, 2^87646380 is an apocalyptic number.

It is an amenable number.

87646380 is an abundant number, since it is smaller than the sum of its proper divisors (157763652).

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

87646380 is a wasteful number, since it uses less digits than its factorization.

87646380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460785 (or 1460783 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 87646380 is about 9361.9645374248. The cubic root of 87646380 is about 444.1994274962.

The spelling of 87646380 in words is "eighty-seven million, six hundred forty-six thousand, three hundred eighty".