680822643 has 8 divisors (see below), whose sum is σ = 913011408. Its totient is φ = 451257824.

The previous prime is 680822641. The next prime is 680822663. The reversal of 680822643 is 346228086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680822643 - 2¹ = 680822641 is a prime.

It is a super-3 number, since 3×680822643³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (680822641) 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, 655380 + ... + 656417.

It is an arithmetic number, because the mean of its divisors is an integer number (114126426).

Almost surely, 2^680822643 is an apocalyptic number.

680822643 is a deficient number, since it is larger than the sum of its proper divisors (232188765).

680822643 is a wasteful number, since it uses less digits than its factorization.

680822643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311973.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 680822643 is about 26092.5783126160. The cubic root of 680822643 is about 879.7204014458.

The spelling of 680822643 in words is "six hundred eighty million, eight hundred twenty-two thousand, six hundred forty-three".