87299173 has 8 divisors (see below), whose sum is σ = 95608800. Its totient is φ = 79217328.

The previous prime is 87299161. The next prime is 87299183. The reversal of 87299173 is 37199278.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87299173 - 2⁹ = 87298661 is a prime.

It is a super-2 number, since 2×87299173² = 15242291212967858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87299183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56143 + ... + 57676.

It is an arithmetic number, because the mean of its divisors is an integer number (11951100).

Almost surely, 2^87299173 is an apocalyptic number.

It is an amenable number.

87299173 is a deficient number, since it is larger than the sum of its proper divisors (8309627).

87299173 is a wasteful number, since it uses less digits than its factorization.

87299173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113891.

The product of its digits is 190512, while the sum is 46.

The square root of 87299173 is about 9343.4026457175. The cubic root of 87299173 is about 443.6120928864.

The spelling of 87299173 in words is "eighty-seven million, two hundred ninety-nine thousand, one hundred seventy-three".