6623451213 has 4 divisors (see below), whose sum is σ = 8831268288. Its totient is φ = 4415634140.

The previous prime is 6623451203. The next prime is 6623451223. The reversal of 6623451213 is 3121543266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6623451203) and next prime (6623451223).

It is a cyclic number.

It is not a de Polignac number, because 6623451213 - 2¹⁶ = 6623385677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6623451203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103908533 + ... + 1103908538.

It is an arithmetic number, because the mean of its divisors is an integer number (2207817072).

Almost surely, 2^6623451213 is an apocalyptic number.

It is an amenable number.

6623451213 is a deficient number, since it is larger than the sum of its proper divisors (2207817075).

6623451213 is a wasteful number, since it uses less digits than its factorization.

6623451213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207817074.

The product of its digits is 25920, while the sum is 33.

The square root of 6623451213 is about 81384.5883014714. The cubic root of 6623451213 is about 1877.9965088098.

Adding to 6623451213 its reverse (3121543266), we get a palindrome (9744994479).

The spelling of 6623451213 in words is "six billion, six hundred twenty-three million, four hundred fifty-one thousand, two hundred thirteen".