354681 has 6 divisors (see below), whose sum is σ = 512330. Its totient is φ = 236448.

The previous prime is 354677. The next prime is 354689. The reversal of 354681 is 186453.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 46656 = 555^2 + 216^2 .

It is not a de Polignac number, because 354681 - 2² = 354677 is a prime.

It is a super-2 number, since 2×354681² = 251597223522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19696 + ... + 19713.

2³⁵⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

354681 is a deficient number, since it is larger than the sum of its proper divisors (157649).

354681 is a wasteful number, since it uses less digits than its factorization.

354681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39415 (or 39412 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 354681 is about 595.5510053723. The cubic root of 354681 is about 70.7857723014.

It can be divided in two parts, 354 and 681, that added together give a triangular number (1035 = T₄₅).

The spelling of 354681 in words is "three hundred fifty-four thousand, six hundred eighty-one".