680243045 has 8 divisors (see below), whose sum is σ = 822523680. Its totient is φ = 540039760.

The previous prime is 680243023. The next prime is 680243051. The reversal of 680243045 is 540342086.

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

It is not a de Polignac number, because 680243045 - 2²⁸ = 411807589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518615 + ... + 519924.

It is an arithmetic number, because the mean of its divisors is an integer number (102815460).

Almost surely, 2^680243045 is an apocalyptic number.

It is an amenable number.

680243045 is a deficient number, since it is larger than the sum of its proper divisors (142280635).

680243045 is a wasteful number, since it uses less digits than its factorization.

680243045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038675.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 680243045 is about 26081.4693796189. The cubic root of 680243045 is about 879.4706893509.

The spelling of 680243045 in words is "six hundred eighty million, two hundred forty-three thousand, forty-five".