680843654 has 8 divisors (see below), whose sum is σ = 1065668400. Its totient is φ = 325620856.

The previous prime is 680843651. The next prime is 680843687. The reversal of 680843654 is 456348086.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680843651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7400429 + ... + 7400520.

It is an arithmetic number, because the mean of its divisors is an integer number (133208550).

Almost surely, 2^680843654 is an apocalyptic number.

680843654 is a deficient number, since it is larger than the sum of its proper divisors (384824746).

680843654 is a wasteful number, since it uses less digits than its factorization.

680843654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14800974.

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 680843654 is about 26092.9809335768. The cubic root of 680843654 is about 879.7294510935.

The spelling of 680843654 in words is "six hundred eighty million, eight hundred forty-three thousand, six hundred fifty-four".