680134217 has 4 divisors (see below), whose sum is σ = 777296256. Its totient is φ = 582972180.

The previous prime is 680134193. The next prime is 680134229. The reversal of 680134217 is 712431086.

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 680134217 - 2⁶ = 680134153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680134237) 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, 48581009 + ... + 48581022.

It is an arithmetic number, because the mean of its divisors is an integer number (194324064).

Almost surely, 2^680134217 is an apocalyptic number.

It is an amenable number.

680134217 is a deficient number, since it is larger than the sum of its proper divisors (97162039).

680134217 is an equidigital number, since it uses as much as digits as its factorization.

680134217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97162038.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 680134217 is about 26079.3829873331. The cubic root of 680134217 is about 879.4237864381.

The spelling of 680134217 in words is "six hundred eighty million, one hundred thirty-four thousand, two hundred seventeen".