685200404794 has 8 divisors (see below), whose sum is σ = 1027822110228. Its totient is φ = 342593034720.

The previous prime is 685200404767. The next prime is 685200404809. The reversal of 685200404794 is 497404002586.

It can be written as a sum of positive squares in 2 ways, for example, as 600102763569 + 85097641225 = 774663^2 + 291715^2 .

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

It is a super-2 number, since 2×685200404794² (a number of 24 digits) contains 22 as substring.

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, 3463537 + ... + 3656020.

Almost surely, 2^685200404794 is an apocalyptic number.

685200404794 is a deficient number, since it is larger than the sum of its proper divisors (342621705434).

685200404794 is a wasteful number, since it uses less digits than its factorization.

685200404794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167680.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 685200404794 in words is "six hundred eighty-five billion, two hundred million, four hundred four thousand, seven hundred ninety-four".