678012087 has 8 divisors (see below), whose sum is σ = 928449136. Its totient is φ = 439791552.

The previous prime is 678012053. The next prime is 678012109. The reversal of 678012087 is 780210876.

678012087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 678012087 - 2¹⁵ = 677979319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678012007) 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, 3053998 + ... + 3054219.

It is an arithmetic number, because the mean of its divisors is an integer number (116056142).

Almost surely, 2^678012087 is an apocalyptic number.

678012087 is a deficient number, since it is larger than the sum of its proper divisors (250437049).

678012087 is a wasteful number, since it uses less digits than its factorization.

678012087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108257.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 678012087 is about 26038.6652307679. The cubic root of 678012087 is about 878.5081848170.

The spelling of 678012087 in words is "six hundred seventy-eight million, twelve thousand, eighty-seven".