685026443 has 4 divisors (see below), whose sum is σ = 690420480. Its totient is φ = 679632408.

The previous prime is 685026427. The next prime is 685026451. The reversal of 685026443 is 344620586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685026443 - 2⁴ = 685026427 is a prime.

It is a super-2 number, since 2×685026443² = 938522455218464498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685026397 and 685026406.

It is not an unprimeable number, because it can be changed into a prime (685026343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696828 + ... + 2697081.

It is an arithmetic number, because the mean of its divisors is an integer number (172605120).

Almost surely, 2^685026443 is an apocalyptic number.

685026443 is a deficient number, since it is larger than the sum of its proper divisors (5394037).

685026443 is a wasteful number, since it uses less digits than its factorization.

685026443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394036.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 685026443 is about 26173.0098192776. The cubic root of 685026443 is about 881.5273248336.

The spelling of 685026443 in words is "six hundred eighty-five million, twenty-six thousand, four hundred forty-three".