678767676 has 12 divisors (see below), whose sum is σ = 1583791272. Its totient is φ = 226255888.

The previous prime is 678767633. The next prime is 678767689. The reversal of 678767676 is 676767876.

It is a happy number.

678767676 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28281975 + ... + 28281998.

It is an arithmetic number, because the mean of its divisors is an integer number (131982606).

Almost surely, 2^678767676 is an apocalyptic number.

It is an amenable number.

678767676 is an abundant number, since it is smaller than the sum of its proper divisors (905023596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678767676 is a wasteful number, since it uses less digits than its factorization.

678767676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56563980 (or 56563978 counting only the distinct ones).

The product of its digits is 24893568, while the sum is 60.

The square root of 678767676 is about 26053.1701717852. The cubic root of 678767676 is about 878.8344054975.

The spelling of 678767676 in words is "six hundred seventy-eight million, seven hundred sixty-seven thousand, six hundred seventy-six".