685492111 has 8 divisors (see below), whose sum is σ = 725622480. Its totient is φ = 646461312.

The previous prime is 685492109. The next prime is 685492117. The reversal of 685492111 is 111294586.

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

It is not a de Polignac number, because 685492111 - 2¹ = 685492109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685492117) 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, 273610 + ... + 276103.

It is an arithmetic number, because the mean of its divisors is an integer number (90702810).

Almost surely, 2^685492111 is an apocalyptic number.

685492111 is a deficient number, since it is larger than the sum of its proper divisors (40130369).

685492111 is a wasteful number, since it uses less digits than its factorization.

685492111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549785.

The product of its digits is 17280, while the sum is 37.

The square root of 685492111 is about 26181.9042661148. The cubic root of 685492111 is about 881.7270281147.

The spelling of 685492111 in words is "six hundred eighty-five million, four hundred ninety-two thousand, one hundred eleven".