356945 has 4 divisors (see below), whose sum is σ = 428340. Its totient is φ = 285552.

The previous prime is 356933. The next prime is 356947. The reversal of 356945 is 549653.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549653 = 13 ⋅42281.

It can be written as a sum of positive squares in 2 ways, for example, as 274576 + 82369 = 524^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 356945 - 2⁴ = 356929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (356947) 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, 35690 + ... + 35699.

It is an arithmetic number, because the mean of its divisors is an integer number (107085).

2³⁵⁶⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

356945 is a deficient number, since it is larger than the sum of its proper divisors (71395).

356945 is an equidigital number, since it uses as much as digits as its factorization.

356945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71394.

The product of its digits is 16200, while the sum is 32.

The square root of 356945 is about 597.4487425713. The cubic root of 356945 is about 70.9360662314.

The spelling of 356945 in words is "three hundred fifty-six thousand, nine hundred forty-five".