351666 has 24 divisors (see below), whose sum is σ = 871104. Its totient is φ = 100440.

The previous prime is 351661. The next prime is 351667. The reversal of 351666 is 666153.

351666 is nontrivially palindromic in base 15.

It is not an unprimeable number, because it can be changed into a prime (351661) 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 11 ways as a sum of consecutive naturals, for example, 1270 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (36296).

2³⁵¹⁶⁶⁶ is an apocalyptic number.

351666 is an abundant number, since it is smaller than the sum of its proper divisors (519438).

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

351666 is a wasteful number, since it uses less digits than its factorization.

351666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806 (or 2803 counting only the distinct ones).

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

The square root of 351666 is about 593.0143337222. The cubic root of 351666 is about 70.5846275117.

The spelling of 351666 in words is "three hundred fifty-one thousand, six hundred sixty-six".