680434777 has 8 divisors (see below), whose sum is σ = 746585280. Its totient is φ = 614999760.

The previous prime is 680434753. The next prime is 680434823. The reversal of 680434777 is 777434086.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680434777 is a prime.

It is a super-4 number, since 4×680434777⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680494777) 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, 176877 + ... + 180682.

It is an arithmetic number, because the mean of its divisors is an integer number (93323160).

Almost surely, 2^680434777 is an apocalyptic number.

It is an amenable number.

680434777 is a deficient number, since it is larger than the sum of its proper divisors (66150503).

680434777 is a wasteful number, since it uses less digits than its factorization.

680434777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357743.

The product of its (nonzero) digits is 790272, while the sum is 46.

The square root of 680434777 is about 26085.1447571218. The cubic root of 680434777 is about 879.5533102296.

The spelling of 680434777 in words is "six hundred eighty million, four hundred thirty-four thousand, seven hundred seventy-seven".