685100003 has 8 divisors (see below), whose sum is σ = 788605440. Its totient is φ = 583003080.

The previous prime is 685099997. The next prime is 685100021. The reversal of 685100003 is 300001586.

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

It is a cyclic number.

It is not a de Polignac number, because 685100003 - 2⁶ = 685099939 is a prime.

It is a super-2 number, since 2×685100003² = 938724028221200018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685100033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351083 + ... + 353028.

It is an arithmetic number, because the mean of its divisors is an integer number (98575680).

Almost surely, 2^685100003 is an apocalyptic number.

685100003 is a deficient number, since it is larger than the sum of its proper divisors (103505437).

685100003 is a wasteful number, since it uses less digits than its factorization.

685100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704257.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 685100003 is about 26174.4150459948. The cubic root of 685100003 is about 881.5588773037.

Adding to 685100003 its reverse (300001586), we get a palindrome (985101589).

The spelling of 685100003 in words is "six hundred eighty-five million, one hundred thousand, three".