685996699498 has 32 divisors (see below), whose sum is σ = 1130108899392. Its totient is φ = 309721276800.

The previous prime is 685996699471. The next prime is 685996699519. The reversal of 685996699498 is 894996699586.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1772728 + ... + 2124748.

It is an arithmetic number, because the mean of its divisors is an integer number (35315903106).

Almost surely, 2^685996699498 is an apocalyptic number.

685996699498 is a deficient number, since it is larger than the sum of its proper divisors (444112199894).

685996699498 is a wasteful number, since it uses less digits than its factorization.

685996699498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352630.

The product of its digits is 16325867520, while the sum is 88.

Adding to 685996699498 its sum of digits (88), we get a palindrome (685996699586).

The spelling of 685996699498 in words is "six hundred eighty-five billion, nine hundred ninety-six million, six hundred ninety-nine thousand, four hundred ninety-eight".