680622870693 has 4 divisors (see below), whose sum is σ = 907497160928. Its totient is φ = 453748580460.

The previous prime is 680622870689. The next prime is 680622870713. The reversal of 680622870693 is 396078226086.

It is a happy number.

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 not a de Polignac number, because 680622870693 - 2² = 680622870689 is a prime.

It is a super-2 number, since 2×680622870693² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680622870623) 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, 113437145113 + ... + 113437145118.

It is an arithmetic number, because the mean of its divisors is an integer number (226874290232).

Almost surely, 2^680622870693 is an apocalyptic number.

It is an amenable number.

680622870693 is a deficient number, since it is larger than the sum of its proper divisors (226874290235).

680622870693 is a wasteful number, since it uses less digits than its factorization.

680622870693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226874290234.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 680622870693 in words is "six hundred eighty billion, six hundred twenty-two million, eight hundred seventy thousand, six hundred ninety-three".