680840162 has 4 divisors (see below), whose sum is σ = 1021260246. Its totient is φ = 340420080.

The previous prime is 680840161. The next prime is 680840179. The reversal of 680840162 is 261048086.

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

It can be written as a sum of positive squares in only one way, i.e., 537822481 + 143017681 = 23191^2 + 11959^2 .

It is not an unprimeable number, because it can be changed into a prime (680840161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170210039 + ... + 170210042.

Almost surely, 2^680840162 is an apocalyptic number.

680840162 is a deficient number, since it is larger than the sum of its proper divisors (340420084).

680840162 is a wasteful number, since it uses less digits than its factorization.

680840162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340420083.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 680840162 is about 26092.9140189439. The cubic root of 680840162 is about 879.7279470671.

The spelling of 680840162 in words is "six hundred eighty million, eight hundred forty thousand, one hundred sixty-two".