689076087 has 32 divisors (see below), whose sum is σ = 1068318720. Its totient is φ = 386934240.

The previous prime is 689076061. The next prime is 689076103. The reversal of 689076087 is 780670986.

It is a happy number.

It is not a de Polignac number, because 689076087 - 2⁶ = 689076023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689076007) 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 31 ways as a sum of consecutive naturals, for example, 624178 + ... + 625280.

It is an arithmetic number, because the mean of its divisors is an integer number (33384960).

Almost surely, 2^689076087 is an apocalyptic number.

689076087 is a deficient number, since it is larger than the sum of its proper divisors (379242633).

689076087 is a wasteful number, since it uses less digits than its factorization.

689076087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 689076087 is about 26250.2587987243. The cubic root of 689076087 is about 883.2610098454.

The spelling of 689076087 in words is "six hundred eighty-nine million, seventy-six thousand, eighty-seven".