87960644 has 12 divisors (see below), whose sum is σ = 154268268. Its totient is φ = 43884000.

The previous prime is 87960643. The next prime is 87960647. The reversal of 87960644 is 44606978.

It can be written as a sum of positive squares in 2 ways, for example, as 33200644 + 54760000 = 5762^2 + 7400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87960595 and 87960604.

It is not an unprimeable number, because it can be changed into a prime (87960643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22007 + ... + 25694.

It is an arithmetic number, because the mean of its divisors is an integer number (12855689).

Almost surely, 2^87960644 is an apocalyptic number.

It is an amenable number.

87960644 is a deficient number, since it is larger than the sum of its proper divisors (66307624).

87960644 is a wasteful number, since it uses less digits than its factorization.

87960644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48166 (or 48164 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 87960644 is about 9378.7336032110. The cubic root of 87960644 is about 444.7296999231.

The spelling of 87960644 in words is "eighty-seven million, nine hundred sixty thousand, six hundred forty-four".