1656323 has 2 divisors, whose sum is σ = 1656324. Its totient is φ = 1656322.

The previous prime is 1656313. The next prime is 1656367. The reversal of 1656323 is 3236561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1656323 is a prime.

It is an Ulam number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1656292 and 1656301.

It is not a weakly prime, because it can be changed into another prime (1656313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828161 + 828162.

It is an arithmetic number, because the mean of its divisors is an integer number (828162).

2^1656323 is an apocalyptic number.

1656323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656323 is an equidigital number, since it uses as much as digits as its factorization.

1656323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 1656323 is about 1286.9821288581. The cubic root of 1656323 is about 118.3173255253.

The spelling of 1656323 in words is "one million, six hundred fifty-six thousand, three hundred twenty-three".