1423563 has 16 divisors (see below), whose sum is σ = 2036736. Its totient is φ = 881280.

The previous prime is 1423553. The next prime is 1423579. The reversal of 1423563 is 3653241.

It is a happy number.

It is not a de Polignac number, because 1423563 - 2⁴ = 1423547 is a prime.

It is a super-2 number, since 2×1423563² = 4053063229938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1423553) 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, 5118 + ... + 5388.

It is an arithmetic number, because the mean of its divisors is an integer number (127296).

2^1423563 is an apocalyptic number.

1423563 is a deficient number, since it is larger than the sum of its proper divisors (613173).

1423563 is a wasteful number, since it uses less digits than its factorization.

1423563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394.

The product of its digits is 2160, while the sum is 24.

The square root of 1423563 is about 1193.1315937481. The cubic root of 1423563 is about 112.4930168505.

The spelling of 1423563 in words is "one million, four hundred twenty-three thousand, five hundred sixty-three".