680473421 has 8 divisors (see below), whose sum is σ = 683537400. Its totient is φ = 677416960.

The previous prime is 680473363. The next prime is 680473427. The reversal of 680473421 is 124374086.

680473421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 339664900 + 340808521 = 18430^2 + 18461^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 680473421 - 2⁶ = 680473357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680473427) 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, 247985 + ... + 250713.

It is an arithmetic number, because the mean of its divisors is an integer number (85442175).

Almost surely, 2^680473421 is an apocalyptic number.

It is an amenable number.

680473421 is a deficient number, since it is larger than the sum of its proper divisors (3063979).

680473421 is a wasteful number, since it uses less digits than its factorization.

680473421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 680473421 is about 26085.8854747160. The cubic root of 680473421 is about 879.5699607672.

The spelling of 680473421 in words is "six hundred eighty million, four hundred seventy-three thousand, four hundred twenty-one".