1423655 has 4 divisors (see below), whose sum is σ = 1708392. Its totient is φ = 1138920.

The previous prime is 1423637. The next prime is 1423663. The reversal of 1423655 is 5563241.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1423655 - 2⁸ = 1423399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142361 + ... + 142370.

It is an arithmetic number, because the mean of its divisors is an integer number (427098).

2^1423655 is an apocalyptic number.

1423655 is a deficient number, since it is larger than the sum of its proper divisors (284737).

1423655 is an equidigital number, since it uses as much as digits as its factorization.

1423655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284736.

The product of its digits is 3600, while the sum is 26.

The square root of 1423655 is about 1193.1701471291. The cubic root of 1423655 is about 112.4954401444.

Adding to 1423655 its reverse (5563241), we get a palindrome (6986896).

The spelling of 1423655 in words is "one million, four hundred twenty-three thousand, six hundred fifty-five".