685738442258 has 8 divisors (see below), whose sum is σ = 1046041691760. Its totient is φ = 337057878340.

The previous prime is 685738442197. The next prime is 685738442261. The reversal of 685738442258 is 852244837586.

It is a happy number.

685738442258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×685738442258² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 685738442258.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905671248 + ... + 2905671483.

It is an arithmetic number, because the mean of its divisors is an integer number (130755211470).

Almost surely, 2^685738442258 is an apocalyptic number.

685738442258 is a deficient number, since it is larger than the sum of its proper divisors (360303249502).

685738442258 is a wasteful number, since it uses less digits than its factorization.

685738442258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811342792.

The product of its digits is 103219200, while the sum is 62.

The spelling of 685738442258 in words is "six hundred eighty-five billion, seven hundred thirty-eight million, four hundred forty-two thousand, two hundred fifty-eight".