685414919 has 8 divisors (see below), whose sum is σ = 786121248. Its totient is φ = 585406080.

The previous prime is 685414909. The next prime is 685414931. The reversal of 685414919 is 919414586.

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

It is not a de Polignac number, because 685414919 - 2⁴ = 685414903 is a prime.

It is a super-2 number, since 2×685414919² = 939587222375553122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685414909) 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, 172262 + ... + 176195.

It is an arithmetic number, because the mean of its divisors is an integer number (98265156).

Almost surely, 2^685414919 is an apocalyptic number.

685414919 is a deficient number, since it is larger than the sum of its proper divisors (100706329).

685414919 is a wasteful number, since it uses less digits than its factorization.

685414919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348745.

The product of its digits is 311040, while the sum is 47.

The square root of 685414919 is about 26180.4300766813. The cubic root of 685414919 is about 881.6939303218.

The spelling of 685414919 in words is "six hundred eighty-five million, four hundred fourteen thousand, nine hundred nineteen".