678302622840 has 64 divisors (see below), whose sum is σ = 2089905392160. Its totient is φ = 175992030720.

The previous prime is 678302622797. The next prime is 678302622871. The reversal of 678302622840 is 48226203876.

It is a self number, because there is not a number n which added to its sum of digits gives 678302622840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76380991 + ... + 76389870.

Almost surely, 2^678302622840 is an apocalyptic number.

678302622840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

678302622840 is an abundant number, since it is smaller than the sum of its proper divisors (1411602769320).

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

678302622840 is a wasteful number, since it uses less digits than its factorization.

678302622840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152770912 (or 152770908 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 678302622840 in words is "six hundred seventy-eight billion, three hundred two million, six hundred twenty-two thousand, eight hundred forty".