678574687 has 24 divisors (see below), whose sum is σ = 803362560. Its totient is φ = 571399920.

The previous prime is 678574679. The next prime is 678574691. The reversal of 678574687 is 786475876.

It is not a de Polignac number, because 678574687 - 2³ = 678574679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678574627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1188112 + ... + 1188682.

It is an arithmetic number, because the mean of its divisors is an integer number (33473440).

Almost surely, 2^678574687 is an apocalyptic number.

678574687 is a deficient number, since it is larger than the sum of its proper divisors (124787873).

678574687 is a wasteful number, since it uses less digits than its factorization.

678574687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 964 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 58.

The square root of 678574687 is about 26049.4661557584. The cubic root of 678574687 is about 878.7511067706.

The spelling of 678574687 in words is "six hundred seventy-eight million, five hundred seventy-four thousand, six hundred eighty-seven".