680251811 has 4 divisors (see below), whose sum is σ = 703708800. Its totient is φ = 656794824.

The previous prime is 680251807. The next prime is 680251823. The reversal of 680251811 is 118152086.

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

It is a cyclic number.

It is not a de Polignac number, because 680251811 - 2² = 680251807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680251211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11728451 + ... + 11728508.

It is an arithmetic number, because the mean of its divisors is an integer number (175927200).

Almost surely, 2^680251811 is an apocalyptic number.

680251811 is a deficient number, since it is larger than the sum of its proper divisors (23456989).

680251811 is a wasteful number, since it uses less digits than its factorization.

680251811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23456988.

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 680251811 is about 26081.6374294253. The cubic root of 680251811 is about 879.4744671218.

The spelling of 680251811 in words is "six hundred eighty million, two hundred fifty-one thousand, eight hundred eleven".