685334291 has 8 divisors (see below), whose sum is σ = 695385600. Its totient is φ = 675355968.

The previous prime is 685334191. The next prime is 685334297. The reversal of 685334291 is 192433586.

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 685334291 - 2²⁶ = 618225427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685334297) 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, 815 + ... + 37031.

It is an arithmetic number, because the mean of its divisors is an integer number (86923200).

Almost surely, 2^685334291 is an apocalyptic number.

685334291 is a deficient number, since it is larger than the sum of its proper divisors (10051309).

685334291 is a wasteful number, since it uses less digits than its factorization.

685334291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36493.

The product of its digits is 155520, while the sum is 41.

The square root of 685334291 is about 26178.8901789209. The cubic root of 685334291 is about 881.6593566138.

The spelling of 685334291 in words is "six hundred eighty-five million, three hundred thirty-four thousand, two hundred ninety-one".