6465623 has 2 divisors, whose sum is σ = 6465624. Its totient is φ = 6465622.

The previous prime is 6465607. The next prime is 6465653. The reversal of 6465623 is 3265646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6465623 - 2⁴ = 6465607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6465623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6465653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232811 + 3232812.

It is an arithmetic number, because the mean of its divisors is an integer number (3232812).

Almost surely, 2^6465623 is an apocalyptic number.

6465623 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465623 is an equidigital number, since it uses as much as digits as its factorization.

6465623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 6465623 is about 2542.7589347007. The cubic root of 6465623 is about 186.2959696148.

The spelling of 6465623 in words is "six million, four hundred sixty-five thousand, six hundred twenty-three".