87266609 has 8 divisors (see below), whose sum is σ = 90855720. Its totient is φ = 83742336.

The previous prime is 87266603. The next prime is 87266611. The reversal of 87266609 is 90666278.

It can be written as a sum of positive squares in 4 ways, for example, as 54169600 + 33097009 = 7360^2 + 5753^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87266609 is a prime.

It is a super-2 number, since 2×87266609² = 15230922092717762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87266609.

It is not an unprimeable number, because it can be changed into a prime (87266603) by changing a digit.

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, 13454 + ... + 18855.

It is an arithmetic number, because the mean of its divisors is an integer number (11356965).

Almost surely, 2^87266609 is an apocalyptic number.

It is an amenable number.

87266609 is a deficient number, since it is larger than the sum of its proper divisors (3589111).

87266609 is a wasteful number, since it uses less digits than its factorization.

87266609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32419.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 87266609 is about 9341.6598632149. The cubic root of 87266609 is about 443.5569278707.

The spelling of 87266609 in words is "eighty-seven million, two hundred sixty-six thousand, six hundred nine".