87203857 has 8 divisors (see below), whose sum is σ = 96450536. Its totient is φ = 78319872.

The previous prime is 87203849. The next prime is 87203881. The reversal of 87203857 is 75830278.

It can be written as a sum of positive squares in 4 ways, for example, as 38427601 + 48776256 = 6199^2 + 6984^2 .

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 87203857 - 2³ = 87203849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87203807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90168 + ... + 91129.

It is an arithmetic number, because the mean of its divisors is an integer number (12056317).

Almost surely, 2^87203857 is an apocalyptic number.

It is an amenable number.

87203857 is a deficient number, since it is larger than the sum of its proper divisors (9246679).

87203857 is a wasteful number, since it uses less digits than its factorization.

87203857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181347.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 87203857 is about 9338.3005413191. The cubic root of 87203857 is about 443.4505841844.

The spelling of 87203857 in words is "eighty-seven million, two hundred three thousand, eight hundred fifty-seven".