87696509 has 8 divisors (see below), whose sum is σ = 88767360. Its totient is φ = 86632000.

The previous prime is 87696487. The next prime is 87696547. The reversal of 87696509 is 90569678.

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 87696509 - 2²⁴ = 70919293 is a prime.

It is a super-3 number, since 3×87696509³ (a number of 25 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87696559) 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, 29909 + ... + 32709.

It is an arithmetic number, because the mean of its divisors is an integer number (11095920).

Almost surely, 2^87696509 is an apocalyptic number.

It is an amenable number.

87696509 is a deficient number, since it is larger than the sum of its proper divisors (1070851).

87696509 is a wasteful number, since it uses less digits than its factorization.

87696509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 87696509 is about 9364.6414239948. The cubic root of 87696509 is about 444.2840973906.

The spelling of 87696509 in words is "eighty-seven million, six hundred ninety-six thousand, five hundred nine".