678802685 has 8 divisors (see below), whose sum is σ = 888614496. Its totient is φ = 493674640.

The previous prime is 678802669. The next prime is 678802699. The reversal of 678802685 is 586208876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678802685 - 2⁴ = 678802669 is a prime.

It is a Curzon number.

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, 6170879 + ... + 6170988.

It is an arithmetic number, because the mean of its divisors is an integer number (111076812).

Almost surely, 2^678802685 is an apocalyptic number.

It is an amenable number.

678802685 is a deficient number, since it is larger than the sum of its proper divisors (209811811).

678802685 is a wasteful number, since it uses less digits than its factorization.

678802685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12341883.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 678802685 is about 26053.8420391312. The cubic root of 678802685 is about 878.8495145379.

The spelling of 678802685 in words is "six hundred seventy-eight million, eight hundred two thousand, six hundred eighty-five".