87206965 has 8 divisors (see below), whose sum is σ = 107476920. Its totient is φ = 67879872.

The previous prime is 87206953. The next prime is 87206983. The reversal of 87206965 is 56960278.

It can be written as a sum of positive squares in 4 ways, for example, as 48344209 + 38862756 = 6953^2 + 6234^2 .

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 87206965 - 2⁷ = 87206837 is a prime.

It is a super-2 number, since 2×87206965² = 15210109489022450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235510 + ... + 235879.

It is an arithmetic number, because the mean of its divisors is an integer number (13434615).

Almost surely, 2^87206965 is an apocalyptic number.

It is an amenable number.

87206965 is a deficient number, since it is larger than the sum of its proper divisors (20269955).

87206965 is a wasteful number, since it uses less digits than its factorization.

87206965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471431.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 87206965 is about 9338.4669512720. The cubic root of 87206965 is about 443.4558524072.

The spelling of 87206965 in words is "eighty-seven million, two hundred six thousand, nine hundred sixty-five".