87399658 has 16 divisors (see below), whose sum is σ = 138208320. Its totient is φ = 41337216.

The previous prime is 87399647. The next prime is 87399667. The reversal of 87399658 is 85699378.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87399599 and 87399608.

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, 32410 + ... + 35002.

It is an arithmetic number, because the mean of its divisors is an integer number (8638020).

Almost surely, 2^87399658 is an apocalyptic number.

87399658 is a deficient number, since it is larger than the sum of its proper divisors (50808662).

87399658 is a wasteful number, since it uses less digits than its factorization.

87399658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501.

The product of its digits is 3265920, while the sum is 55.

The square root of 87399658 is about 9348.7784228743. The cubic root of 87399658 is about 443.7822329823.

The spelling of 87399658 in words is "eighty-seven million, three hundred ninety-nine thousand, six hundred fifty-eight".