656347 has 2 divisors, whose sum is σ = 656348. Its totient is φ = 656346.

The previous prime is 656333. The next prime is 656371. The reversal of 656347 is 743656.

656347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656347 - 2¹⁹ = 132059 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (656377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328173 + 328174.

It is an arithmetic number, because the mean of its divisors is an integer number (328174).

2⁶⁵⁶³⁴⁷ is an apocalyptic number.

656347 is a deficient number, since it is larger than the sum of its proper divisors (1).

656347 is an equidigital number, since it uses as much as digits as its factorization.

656347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 656347 is about 810.1524547886. The cubic root of 656347 is about 86.9049474933.

The spelling of 656347 in words is "six hundred fifty-six thousand, three hundred forty-seven".