87206317 has 16 divisors (see below), whose sum is σ = 102481920. Its totient is φ = 73378800.

The previous prime is 87206309. The next prime is 87206321. The reversal of 87206317 is 71360278.

It is not a de Polignac number, because 87206317 - 2³ = 87206309 is a prime.

It is a super-3 number, since 3×87206317³ (a number of 25 digits) contains 333 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 (87206417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2284 + ... + 13402.

It is an arithmetic number, because the mean of its divisors is an integer number (6405120).

Almost surely, 2^87206317 is an apocalyptic number.

It is an amenable number.

87206317 is a deficient number, since it is larger than the sum of its proper divisors (15275603).

87206317 is a wasteful number, since it uses less digits than its factorization.

87206317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11184.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 87206317 is about 9338.4322560053. The cubic root of 87206317 is about 443.4547540236.

The spelling of 87206317 in words is "eighty-seven million, two hundred six thousand, three hundred seventeen".