856354 has 4 divisors (see below), whose sum is σ = 1284534. Its totient is φ = 428176.

The previous prime is 856351. The next prime is 856369. The reversal of 856354 is 453658.

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

It can be written as a sum of positive squares in only one way, i.e., 855625 + 729 = 925^2 + 27^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (856351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214087 + ... + 214090.

2⁸⁵⁶³⁵⁴ is an apocalyptic number.

856354 is a deficient number, since it is larger than the sum of its proper divisors (428180).

856354 is a wasteful number, since it uses less digits than its factorization.

856354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428179.

The product of its digits is 14400, while the sum is 31.

The square root of 856354 is about 925.3939701554. The cubic root of 856354 is about 94.9622749565.

The spelling of 856354 in words is "eight hundred fifty-six thousand, three hundred fifty-four".