1356623 has 2 divisors, whose sum is σ = 1356624. Its totient is φ = 1356622.

The previous prime is 1356611. The next prime is 1356629. The reversal of 1356623 is 3266531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1356592 and 1356601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678311 + 678312.

It is an arithmetic number, because the mean of its divisors is an integer number (678312).

2^1356623 is an apocalyptic number.

1356623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356623 is an equidigital number, since it uses as much as digits as its factorization.

1356623 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 1356623 is about 1164.7416022449. The cubic root of 1356623 is about 110.7013860596.

The spelling of 1356623 in words is "one million, three hundred fifty-six thousand, six hundred twenty-three".