678805852 has 24 divisors (see below), whose sum is σ = 1259359920. Its totient is φ = 319038720.

The previous prime is 678805849. The next prime is 678805861. The reversal of 678805852 is 258508876.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 678805796 and 678805805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52602 + ... + 64222.

It is an arithmetic number, because the mean of its divisors is an integer number (52473330).

Almost surely, 2^678805852 is an apocalyptic number.

It is an amenable number.

678805852 is a deficient number, since it is larger than the sum of its proper divisors (580554068).

678805852 is a wasteful number, since it uses less digits than its factorization.

678805852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501 (or 12499 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 49.

The square root of 678805852 is about 26053.9028170445. The cubic root of 678805852 is about 878.8508813131.

The spelling of 678805852 in words is "six hundred seventy-eight million, eight hundred five thousand, eight hundred fifty-two".