6631023 has 24 divisors (see below), whose sum is σ = 10433280. Its totient is φ = 3734640.

The previous prime is 6631021. The next prime is 6631033. The reversal of 6631023 is 3201366.

It is not a de Polignac number, because 6631023 - 2¹ = 6631021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

6631023 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11328 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (434720).

Almost surely, 2^6631023 is an apocalyptic number.

6631023 is a deficient number, since it is larger than the sum of its proper divisors (3802257).

6631023 is a wasteful number, since it uses less digits than its factorization.

6631023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 6631023 is about 2575.0772803937. The cubic root of 6631023 is about 187.8711864694.

Adding to 6631023 its reverse (3201366), we get a palindrome (9832389).

The spelling of 6631023 in words is "six million, six hundred thirty-one thousand, twenty-three".