423620563 has 16 divisors (see below), whose sum is σ = 442480896. Its totient is φ = 405266400.

The previous prime is 423620557. The next prime is 423620581. The reversal of 423620563 is 365026324.

It is a happy number.

It is not a de Polignac number, because 423620563 - 2²¹ = 421523411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423620663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446856 + ... + 447802.

It is an arithmetic number, because the mean of its divisors is an integer number (27655056).

Almost surely, 2^423620563 is an apocalyptic number.

423620563 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

423620563 is a deficient number, since it is larger than the sum of its proper divisors (18860333).

423620563 is a wasteful number, since it uses less digits than its factorization.

423620563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 423620563 is about 20582.0446749102. The cubic root of 423620563 is about 751.0329843084.

Adding to 423620563 its reverse (365026324), we get a palindrome (788646887).

The spelling of 423620563 in words is "four hundred twenty-three million, six hundred twenty thousand, five hundred sixty-three".