351616 has 32 divisors (see below), whose sum is σ = 728280. Its totient is φ = 168960.

The previous prime is 351599. The next prime is 351643. The reversal of 351616 is 616153.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×351616² = 247267622912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5215 + ... + 5281.

2³⁵¹⁶¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364140).

351616 is an abundant number, since it is smaller than the sum of its proper divisors (376664).

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

351616 is an equidigital number, since it uses as much as digits as its factorization.

351616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 110 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 351616 is about 592.9721747266. The cubic root of 351616 is about 70.5812821038.

Adding to 351616 its reverse (616153), we get a palindrome (967769).

The spelling of 351616 in words is "three hundred fifty-one thousand, six hundred sixteen".