354985 has 4 divisors (see below), whose sum is σ = 425988. Its totient is φ = 283984.

The previous prime is 354983. The next prime is 354997. The reversal of 354985 is 589453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59049 + 295936 = 243^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 354985 - 2¹ = 354983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 354985.

It is not an unprimeable number, because it can be changed into a prime (354983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35494 + ... + 35503.

It is an arithmetic number, because the mean of its divisors is an integer number (106497).

2³⁵⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

354985 is a deficient number, since it is larger than the sum of its proper divisors (71003).

354985 is an equidigital number, since it uses as much as digits as its factorization.

354985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71002.

The product of its digits is 21600, while the sum is 34.

The square root of 354985 is about 595.8061765373. The cubic root of 354985 is about 70.8059902153.

The spelling of 354985 in words is "three hundred fifty-four thousand, nine hundred eighty-five".