87609616 has 20 divisors (see below), whose sum is σ = 170887500. Its totient is φ = 43509632.

The previous prime is 87609593. The next prime is 87609617. The reversal of 87609616 is 61690678.

It can be written as a sum of positive squares in 2 ways, for example, as 10240000 + 77369616 = 3200^2 + 8796^2 .

It is not an unprimeable number, because it can be changed into a prime (87609617) 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, 15991 + ... + 20758.

It is an arithmetic number, because the mean of its divisors is an integer number (8544375).

Almost surely, 2^87609616 is an apocalyptic number.

It is an amenable number.

87609616 is a deficient number, since it is larger than the sum of its proper divisors (83277884).

87609616 is a wasteful number, since it uses less digits than its factorization.

87609616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36906 (or 36900 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 87609616 is about 9360.0008547008. Note that the first 3 decimals coincide. The cubic root of 87609616 is about 444.1373111007.

It can be divided in two parts, 876096 and 16, that multiplied together give a square (14017536 = 3744²).

The spelling of 87609616 in words is "eighty-seven million, six hundred nine thousand, six hundred sixteen".