687580289 has 8 divisors (see below), whose sum is σ = 764240832. Its totient is φ = 613278640.

The previous prime is 687580273. The next prime is 687580301. The reversal of 687580289 is 982085786.

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 687580289 - 2⁴ = 687580273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 687580289.

It is not an unprimeable number, because it can be changed into a prime (687580219) 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, 589109 + ... + 590274.

It is an arithmetic number, because the mean of its divisors is an integer number (95530104).

Almost surely, 2^687580289 is an apocalyptic number.

It is an amenable number.

687580289 is a deficient number, since it is larger than the sum of its proper divisors (76660543).

687580289 is a wasteful number, since it uses less digits than its factorization.

687580289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179447.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 687580289 is about 26221.7522107124. The cubic root of 687580289 is about 882.6214398441.

The spelling of 687580289 in words is "six hundred eighty-seven million, five hundred eighty thousand, two hundred eighty-nine".