345921684 has 24 divisors (see below), whose sum is σ = 833188608. Its totient is φ = 111587520.

The previous prime is 345921659. The next prime is 345921701. The reversal of 345921684 is 486129543.

It is a super-2 number, since 2×345921684² = 239323622922791712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464577 + ... + 465320.

It is an arithmetic number, because the mean of its divisors is an integer number (34716192).

Almost surely, 2^345921684 is an apocalyptic number.

It is an amenable number.

345921684 is an abundant number, since it is smaller than the sum of its proper divisors (487266924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345921684 is a wasteful number, since it uses less digits than its factorization.

345921684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929935 (or 929933 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 345921684 is about 18598.9699714796. The cubic root of 345921684 is about 701.9819233825.

The spelling of 345921684 in words is "three hundred forty-five million, nine hundred twenty-one thousand, six hundred eighty-four".