685329497049 has 8 divisors (see below), whose sum is σ = 913777191712. Its totient is φ = 456884066880.

The previous prime is 685329497029. The next prime is 685329497057. The reversal of 685329497049 is 940794923586.

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

It is not a de Polignac number, because 685329497049 - 2⁷ = 685329496921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (685329497029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353409 + ... + 1222929.

It is an arithmetic number, because the mean of its divisors is an integer number (114222148964).

Almost surely, 2^685329497049 is an apocalyptic number.

It is an amenable number.

685329497049 is a deficient number, since it is larger than the sum of its proper divisors (228447694663).

685329497049 is a wasteful number, since it uses less digits than its factorization.

685329497049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132247.

The product of its (nonzero) digits is 117573120, while the sum is 66.

The spelling of 685329497049 in words is "six hundred eighty-five billion, three hundred twenty-nine million, four hundred ninety-seven thousand, forty-nine".