351668 has 6 divisors (see below), whose sum is σ = 615426. Its totient is φ = 175832.

The previous prime is 351667. The next prime is 351691. The reversal of 351668 is 866153.

It can be written as a sum of positive squares in only one way, i.e., 283024 + 68644 = 532^2 + 262^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 351668.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 43955 + ... + 43962.

It is an arithmetic number, because the mean of its divisors is an integer number (102571).

2³⁵¹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

351668 is a deficient number, since it is larger than the sum of its proper divisors (263758).

351668 is a wasteful number, since it uses less digits than its factorization.

351668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87921 (or 87919 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 351668 is about 593.0160200197. The cubic root of 351668 is about 70.5847613214.

The spelling of 351668 in words is "three hundred fifty-one thousand, six hundred sixty-eight".