685149196802 has 8 divisors (see below), whose sum is σ = 1174541480256. Its totient is φ = 293635370052.

The previous prime is 685149196801. The next prime is 685149196843. The reversal of 685149196802 is 208691941586.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (685149196801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24469614158 + ... + 24469614185.

It is an arithmetic number, because the mean of its divisors is an integer number (146817685032).

Almost surely, 2^685149196802 is an apocalyptic number.

685149196802 is a deficient number, since it is larger than the sum of its proper divisors (489392283454).

685149196802 is a wasteful number, since it uses less digits than its factorization.

685149196802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48939228352.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 685149196802 in words is "six hundred eighty-five billion, one hundred forty-nine million, one hundred ninety-six thousand, eight hundred two".