6455623 has 2 divisors, whose sum is σ = 6455624. Its totient is φ = 6455622.

The previous prime is 6455593. The next prime is 6455639. The reversal of 6455623 is 3265546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6455623 - 2¹⁷ = 6324551 is a prime.

6455623 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6455923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227811 + 3227812.

It is an arithmetic number, because the mean of its divisors is an integer number (3227812).

Almost surely, 2^6455623 is an apocalyptic number.

6455623 is a deficient number, since it is larger than the sum of its proper divisors (1).

6455623 is an equidigital number, since it uses as much as digits as its factorization.

6455623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 31.

The square root of 6455623 is about 2540.7918057173. The cubic root of 6455623 is about 186.1998757058.

The spelling of 6455623 in words is "six million, four hundred fifty-five thousand, six hundred twenty-three".