354609 has 18 divisors (see below), whose sum is σ = 542178. Its totient is φ = 223200.

The previous prime is 354587. The next prime is 354619. The reversal of 354609 is 906453.

It is a happy number.

354609 is a `hidden beast` number, since 3 + 54 + 609 = 666.

It can be written as a sum of positive squares in only one way, i.e., 216225 + 138384 = 465^2 + 372^2 .

It is not a de Polignac number, because 354609 - 2⁸ = 354353 is a prime.

It is a d-powerful number, because it can be written as 3 + 5⁷ + 6⁵ + 4⁹ + 0 + 9⁴ .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354619) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8629 + ... + 8669.

It is an arithmetic number, because the mean of its divisors is an integer number (30121).

2³⁵⁴⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

354609 is a deficient number, since it is larger than the sum of its proper divisors (187569).

354609 is a wasteful number, since it uses less digits than its factorization.

354609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 354609 is about 595.4905540813. The cubic root of 354609 is about 70.7809821562.

The spelling of 354609 in words is "three hundred fifty-four thousand, six hundred nine".