680061842 has 4 divisors (see below), whose sum is σ = 1020092766. Its totient is φ = 340030920.

The previous prime is 680061827. The next prime is 680061857. The reversal of 680061842 is 248160086.

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 (680061827) and next prime (680061857).

It can be written as a sum of positive squares in only one way, i.e., 411724681 + 268337161 = 20291^2 + 16381^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170015459 + ... + 170015462.

Almost surely, 2^680061842 is an apocalyptic number.

680061842 is a deficient number, since it is larger than the sum of its proper divisors (340030924).

680061842 is a wasteful number, since it uses less digits than its factorization.

680061842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340030923.

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

The square root of 680061842 is about 26077.9953600732. The cubic root of 680061842 is about 879.3925913432.

The spelling of 680061842 in words is "six hundred eighty million, sixty-one thousand, eight hundred forty-two".