354243681 has 24 divisors (see below), whose sum is σ = 561038400. Its totient is φ = 213602400.

The previous prime is 354243667. The next prime is 354243691. The reversal of 354243681 is 186342453.

354243681 is a `hidden beast` number, since 3 + 542 + 4 + 36 + 81 = 666.

It is not a de Polignac number, because 354243681 - 2⁷ = 354243553 is a prime.

It is a super-3 number, since 3×354243681³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (354243691) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10711 + ... + 28691.

It is an arithmetic number, because the mean of its divisors is an integer number (23376600).

Almost surely, 2^354243681 is an apocalyptic number.

It is an amenable number.

354243681 is a deficient number, since it is larger than the sum of its proper divisors (206794719).

354243681 is a wasteful number, since it uses less digits than its factorization.

354243681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197 (or 18194 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 354243681 is about 18821.3623577041. The cubic root of 354243681 is about 707.5666756159.

The spelling of 354243681 in words is "three hundred fifty-four million, two hundred forty-three thousand, six hundred eighty-one".