356645 has 4 divisors (see below), whose sum is σ = 427980. Its totient is φ = 285312.

The previous prime is 356621. The next prime is 356647. The reversal of 356645 is 546653.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49729 + 306916 = 223^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 356645 - 2¹² = 352549 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 356645.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35660 + ... + 35669.

It is an arithmetic number, because the mean of its divisors is an integer number (106995).

2³⁵⁶⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

356645 is a deficient number, since it is larger than the sum of its proper divisors (71335).

356645 is an equidigital number, since it uses as much as digits as its factorization.

356645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71334.

The product of its digits is 10800, while the sum is 29.

The square root of 356645 is about 597.1976222324. The cubic root of 356645 is about 70.9161875530.

It can be divided in two parts, 356 and 645, that added together give a palindrome (1001).

The spelling of 356645 in words is "three hundred fifty-six thousand, six hundred forty-five".