680081773 has 4 divisors (see below), whose sum is σ = 777236320. Its totient is φ = 582927228.

The previous prime is 680081771. The next prime is 680081791. The reversal of 680081773 is 377180086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680081773 - 2¹ = 680081771 is a prime.

It is a super-2 number, since 2×680081773² = 925022435933647058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680081771) 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, 48577263 + ... + 48577276.

It is an arithmetic number, because the mean of its divisors is an integer number (194309080).

Almost surely, 2^680081773 is an apocalyptic number.

It is an amenable number.

680081773 is a deficient number, since it is larger than the sum of its proper divisors (97154547).

680081773 is an equidigital number, since it uses as much as digits as its factorization.

680081773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97154546.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 680081773 is about 26078.3774993768. The cubic root of 680081773 is about 879.4011822298.

The spelling of 680081773 in words is "six hundred eighty million, eighty-one thousand, seven hundred seventy-three".