87260509 has 8 divisors (see below), whose sum is σ = 100396800. Its totient is φ = 74291856.

The previous prime is 87260501. The next prime is 87260513. The reversal of 87260509 is 90506278.

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 87260509 - 2³ = 87260501 is a prime.

It is a super-2 number, since 2×87260509² = 15228792861878162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87260501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40789 + ... + 42874.

It is an arithmetic number, because the mean of its divisors is an integer number (12549600).

Almost surely, 2^87260509 is an apocalyptic number.

It is an amenable number.

87260509 is a deficient number, since it is larger than the sum of its proper divisors (13136291).

87260509 is a wasteful number, since it uses less digits than its factorization.

87260509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83819.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 87260509 is about 9341.3333630697. Note that the first 4 decimals coincide. The cubic root of 87260509 is about 443.5465926450.

The spelling of 87260509 in words is "eighty-seven million, two hundred sixty thousand, five hundred nine".