680567999 has 8 divisors (see below), whose sum is σ = 710664192. Its totient is φ = 650514040.

The previous prime is 680567963. The next prime is 680568001. The reversal of 680567999 is 999765086.

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 680567999 - 2⁸ = 680567743 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 (680567299) 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, 24962 + ... + 44544.

It is an arithmetic number, because the mean of its divisors is an integer number (88833024).

Almost surely, 2^680567999 is an apocalyptic number.

680567999 is a deficient number, since it is larger than the sum of its proper divisors (30096193).

680567999 is a wasteful number, since it uses less digits than its factorization.

680567999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21117.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The square root of 680567999 is about 26087.6982311587. The cubic root of 680567999 is about 879.6107089245.

The spelling of 680567999 in words is "six hundred eighty million, five hundred sixty-seven thousand, nine hundred ninety-nine".