678696427402 has 48 divisors (see below), whose sum is σ = 1243177770240. Its totient is φ = 276715958400.

The previous prime is 678696427319. The next prime is 678696427447. The reversal of 678696427402 is 204724696876.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1713999 + ... + 2072482.

It is an arithmetic number, because the mean of its divisors is an integer number (25899536880).

Almost surely, 2^678696427402 is an apocalyptic number.

678696427402 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

678696427402 is a deficient number, since it is larger than the sum of its proper divisors (564481342838).

678696427402 is a wasteful number, since it uses less digits than its factorization.

678696427402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786587 (or 3786580 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 678696427402 in words is "six hundred seventy-eight billion, six hundred ninety-six million, four hundred twenty-seven thousand, four hundred two".