356643 has 40 divisors (see below), whose sum is σ = 662112. Its totient is φ = 186624.

The previous prime is 356621. The next prime is 356647. The reversal of 356643 is 346653.

It is not a de Polignac number, because 356643 - 2⁶ = 356579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 3³ + 5⁵ + 6⁵ + 6⁷ + 4⁸ + 3⁵ .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (356647) by changing a digit.

It is a Kaprekar number, because its square (127194229449) can be partitioned into two parts whose sum is 356643.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9621 + ... + 9657.

2³⁵⁶⁶⁴³ is an apocalyptic number.

356643 is the 378-th heptagonal number.

356643 is a deficient number, since it is larger than the sum of its proper divisors (305469).

356643 is a wasteful number, since it uses less digits than its factorization.

356643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 64 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 356643 is about 597.1959477424. The cubic root of 356643 is about 70.9160549911.

It can be divided in two parts, 356 and 643, that added together give a palindrome (999).

The spelling of 356643 in words is "three hundred fifty-six thousand, six hundred forty-three".