679983895 has 4 divisors (see below), whose sum is σ = 815980680. Its totient is φ = 543987112.

The previous prime is 679983883. The next prime is 679983907. The reversal of 679983895 is 598389976.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (679983883) and next prime (679983907).

It is a cyclic number.

It is not a de Polignac number, because 679983895 - 2¹¹ = 679981847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67998385 + ... + 67998394.

It is an arithmetic number, because the mean of its divisors is an integer number (203995170).

Almost surely, 2^679983895 is an apocalyptic number.

679983895 is a deficient number, since it is larger than the sum of its proper divisors (135996785).

679983895 is a wasteful number, since it uses less digits than its factorization.

679983895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135996784.

The product of its digits is 29393280, while the sum is 64.

The square root of 679983895 is about 26076.5008197036. The cubic root of 679983895 is about 879.3589921276.

The spelling of 679983895 in words is "six hundred seventy-nine million, nine hundred eighty-three thousand, eight hundred ninety-five".