87599313 has 24 divisors (see below), whose sum is σ = 134779008. Its totient is φ = 56815344.

The previous prime is 87599287. The next prime is 87599321. The reversal of 87599313 is 31399578.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-87599313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87599353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4120 + ... + 13862.

It is an arithmetic number, because the mean of its divisors is an integer number (5615792).

Almost surely, 2^87599313 is an apocalyptic number.

It is an amenable number.

87599313 is a deficient number, since it is larger than the sum of its proper divisors (47179695).

87599313 is an equidigital number, since it uses as much as digits as its factorization.

87599313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9795 (or 9783 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 87599313 is about 9359.4504646373. The cubic root of 87599313 is about 444.1199000511.

The spelling of 87599313 in words is "eighty-seven million, five hundred ninety-nine thousand, three hundred thirteen".