345666685 has 24 divisors (see below), whose sum is σ = 513336960. Its totient is φ = 218791872.

The previous prime is 345666683. The next prime is 345666703. The reversal of 345666685 is 586666543.

It is not a de Polignac number, because 345666685 - 2¹ = 345666683 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345666683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23305 + ... + 35134.

It is an arithmetic number, because the mean of its divisors is an integer number (21389040).

Almost surely, 2^345666685 is an apocalyptic number.

345666685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

345666685 is a deficient number, since it is larger than the sum of its proper divisors (167670275).

345666685 is a wasteful number, since it uses less digits than its factorization.

345666685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58477 (or 58464 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

The square root of 345666685 is about 18592.1135162197. The cubic root of 345666685 is about 701.8093904079.

The spelling of 345666685 in words is "three hundred forty-five million, six hundred sixty-six thousand, six hundred eighty-five".