678086402 has 24 divisors (see below), whose sum is σ = 1245468240. Its totient is φ = 275312520.

The previous prime is 678086363. The next prime is 678086419. The reversal of 678086402 is 204680876.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 678086402.

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, 180224 + ... + 183947.

It is an arithmetic number, because the mean of its divisors is an integer number (51894510).

Almost surely, 2^678086402 is an apocalyptic number.

678086402 is a deficient number, since it is larger than the sum of its proper divisors (567381838).

678086402 is a wasteful number, since it uses less digits than its factorization.

678086402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364206 (or 364199 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 678086402 is about 26040.0922041378. The cubic root of 678086402 is about 878.5402805824.

The spelling of 678086402 in words is "six hundred seventy-eight million, eighty-six thousand, four hundred two".