680361718 has 4 divisors (see below), whose sum is σ = 1020542580. Its totient is φ = 340180858.

The previous prime is 680361713. The next prime is 680361727. The reversal of 680361718 is 817163086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 817163086 = 2 ⋅408581543.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680361713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170090428 + ... + 170090431.

It is an arithmetic number, because the mean of its divisors is an integer number (255135645).

Almost surely, 2^680361718 is an apocalyptic number.

680361718 is a deficient number, since it is larger than the sum of its proper divisors (340180862).

680361718 is a wasteful number, since it uses less digits than its factorization.

680361718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340180861.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 680361718 is about 26083.7443247706. The cubic root of 680361718 is about 879.5218295805.

The spelling of 680361718 in words is "six hundred eighty million, three hundred sixty-one thousand, seven hundred eighteen".