8420623 has 12 divisors (see below), whose sum is σ = 8958144. Its totient is φ = 7905600.

The previous prime is 8420603. The next prime is 8420651. The reversal of 8420623 is 3260248.

It is a happy number.

It is not a de Polignac number, because 8420623 - 2¹⁷ = 8289551 is a prime.

It is a d-powerful number, because it can be written as 8 + 4⁶ + 2¹³ + 0 + 6² + 2²³ + 3⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420603) 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 in 11 ways as a sum of consecutive naturals, for example, 115315 + ... + 115387.

It is an arithmetic number, because the mean of its divisors is an integer number (746512).

Almost surely, 2^8420623 is an apocalyptic number.

8420623 is a deficient number, since it is larger than the sum of its proper divisors (537521).

8420623 is an equidigital number, since it uses as much as digits as its factorization.

8420623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 8420623 is about 2901.8309737130. The cubic root of 8420623 is about 203.4454936756.

The spelling of 8420623 in words is "eight million, four hundred twenty thousand, six hundred twenty-three".