678900397 has 8 divisors (see below), whose sum is σ = 776048256. Its totient is φ = 581793072.

The previous prime is 678900377. The next prime is 678900401. The reversal of 678900397 is 793009876.

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

It is a de Polignac number, because none of the positive numbers 2^k-678900397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 678900397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678900377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48048 + ... + 60550.

It is an arithmetic number, because the mean of its divisors is an integer number (97006032).

Almost surely, 2^678900397 is an apocalyptic number.

It is an amenable number.

678900397 is a deficient number, since it is larger than the sum of its proper divisors (97147859).

678900397 is a wasteful number, since it uses less digits than its factorization.

678900397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20267.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 678900397 is about 26055.7171653363. The cubic root of 678900397 is about 878.8916819333.

The spelling of 678900397 in words is "six hundred seventy-eight million, nine hundred thousand, three hundred ninety-seven".