678622692 has 36 divisors (see below), whose sum is σ = 1740493328. Its totient is φ = 205642800.

The previous prime is 678622687. The next prime is 678622727. The reversal of 678622692 is 296226876.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232234 + ... + 235137.

Almost surely, 2^678622692 is an apocalyptic number.

It is an amenable number.

678622692 is an abundant number, since it is smaller than the sum of its proper divisors (1061870636).

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

678622692 is a wasteful number, since it uses less digits than its factorization.

678622692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467400 (or 467387 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 678622692 is about 26050.3875594971. The cubic root of 678622692 is about 878.7718283669.

The spelling of 678622692 in words is "six hundred seventy-eight million, six hundred twenty-two thousand, six hundred ninety-two".