495621 has 12 divisors (see below), whose sum is σ = 818272. Its totient is φ = 283176.

The previous prime is 495619. The next prime is 495629. The reversal of 495621 is 126594.

495621 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 495621 - 2¹ = 495619 is a prime.

495621 is strictly pandigital in base 7.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3871 + ... + 3996.

2⁴⁹⁵⁶²¹ is an apocalyptic number.

It is an amenable number.

495621 is a deficient number, since it is larger than the sum of its proper divisors (322651).

495621 is a wasteful number, since it uses less digits than its factorization.

495621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880 (or 7877 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 495621 is about 704.0035511274. The cubic root of 495621 is about 79.1376652158.

Subtracting from 495621 its sum of digits (27), we obtain a palindrome (495594).

The spelling of 495621 in words is "four hundred ninety-five thousand, six hundred twenty-one".