351644 has 6 divisors (see below), whose sum is σ = 615384. Its totient is φ = 175820.

The previous prime is 351643. The next prime is 351653. The reversal of 351644 is 446153.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351643) 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, 43952 + ... + 43959.

It is an arithmetic number, because the mean of its divisors is an integer number (102564).

2³⁵¹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

351644 is a deficient number, since it is larger than the sum of its proper divisors (263740).

351644 is a wasteful number, since it uses less digits than its factorization.

351644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87915 (or 87913 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 351644 is about 592.9957841334. The cubic root of 351644 is about 70.5831555713.

Adding to 351644 its reverse (446153), we get a palindrome (797797).

The spelling of 351644 in words is "three hundred fifty-one thousand, six hundred forty-four".