680199906 has 8 divisors (see below), whose sum is σ = 1360399824. Its totient is φ = 226733300.

The previous prime is 680199899. The next prime is 680199913. The reversal of 680199906 is 609991086.

It is an interprime number because it is at equal distance from previous prime (680199899) and next prime (680199913).

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

680199906 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56683320 + ... + 56683331.

It is an arithmetic number, because the mean of its divisors is an integer number (170049978).

Almost surely, 2^680199906 is an apocalyptic number.

680199906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680199906 is a wasteful number, since it uses less digits than its factorization.

680199906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113366656.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 680199906 is about 26080.6423617211. The cubic root of 680199906 is about 879.4520978155.

The spelling of 680199906 in words is "six hundred eighty million, one hundred ninety-nine thousand, nine hundred six".