2631623 has 4 divisors (see below), whose sum is σ = 2643648. Its totient is φ = 2619600.

The previous prime is 2631581. The next prime is 2631631. The reversal of 2631623 is 3261362.

2631623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2631623 - 2¹⁰ = 2630599 is a prime.

It is a super-2 number, since 2×2631623² = 13850879228258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹¹ + 6² + 3⁶ + 1 + 6³ + 2²¹ + 3¹² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631653) 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 3 ways as a sum of consecutive naturals, for example, 5678 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (660912).

2^2631623 is an apocalyptic number.

2631623 is a deficient number, since it is larger than the sum of its proper divisors (12025).

2631623 is a wasteful number, since it uses less digits than its factorization.

2631623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12024.

The product of its digits is 1296, while the sum is 23.

The square root of 2631623 is about 1622.2277891838. The cubic root of 2631623 is about 138.0621263364.

Adding to 2631623 its reverse (3261362), we get a palindrome (5892985).

The spelling of 2631623 in words is "two million, six hundred thirty-one thousand, six hundred twenty-three".