685000486651 has 4 divisors (see below), whose sum is σ = 737692831792. Its totient is φ = 632308141512.

The previous prime is 685000486631. The next prime is 685000486741. The reversal of 685000486651 is 156684000586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685000486651 - 2⁷ = 685000486523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685000486595 and 685000486604.

It is not an unprimeable number, because it can be changed into a prime (685000486631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26346172551 + ... + 26346172576.

It is an arithmetic number, because the mean of its divisors is an integer number (184423207948).

Almost surely, 2^685000486651 is an apocalyptic number.

685000486651 is a deficient number, since it is larger than the sum of its proper divisors (52692345141).

685000486651 is a wasteful number, since it uses less digits than its factorization.

685000486651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52692345140.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 685000486651 in words is "six hundred eighty-five billion, four hundred eighty-six thousand, six hundred fifty-one".