680881542 has 16 divisors (see below), whose sum is σ = 1485559872. Its totient is φ = 206327720.

The previous prime is 680881541. The next prime is 680881561. The reversal of 680881542 is 245188086.

It is a junction number, because it is equal to n+sod(n) for n = 680881494 and 680881503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680881541) 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, 5158128 + ... + 5158259.

It is an arithmetic number, because the mean of its divisors is an integer number (92847492).

Almost surely, 2^680881542 is an apocalyptic number.

680881542 is an abundant number, since it is smaller than the sum of its proper divisors (804678330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680881542 is a wasteful number, since it uses less digits than its factorization.

680881542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316403.

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 680881542 is about 26093.7069424794. The cubic root of 680881542 is about 879.7457693633.

The spelling of 680881542 in words is "six hundred eighty million, eight hundred eighty-one thousand, five hundred forty-two".