680493835 has 16 divisors (see below), whose sum is σ = 982368000. Its totient is φ = 442064736.

The previous prime is 680493823. The next prime is 680493841. The reversal of 680493835 is 538394086.

It is a cyclic number.

It is not a de Polignac number, because 680493835 - 2¹⁹ = 679969547 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 510985 + ... + 512314.

It is an arithmetic number, because the mean of its divisors is an integer number (61398000).

Almost surely, 2^680493835 is an apocalyptic number.

680493835 is a deficient number, since it is larger than the sum of its proper divisors (301874165).

680493835 is a wasteful number, since it uses less digits than its factorization.

680493835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023330.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 680493835 is about 26086.2767561797. The cubic root of 680493835 is about 879.5787562916.

It can be divided in two parts, 680 and 493835, that added together give a triangular number (494515 = T₉₉₄).

The spelling of 680493835 in words is "six hundred eighty million, four hundred ninety-three thousand, eight hundred thirty-five".