623122651 has 4 divisors (see below), whose sum is σ = 655918600. Its totient is φ = 590326704.

The previous prime is 623122637. The next prime is 623122667. The reversal of 623122651 is 156221326.

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 623122651 - 2⁷ = 623122523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623122051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16397946 + ... + 16397983.

It is an arithmetic number, because the mean of its divisors is an integer number (163979650).

Almost surely, 2^623122651 is an apocalyptic number.

623122651 is a deficient number, since it is larger than the sum of its proper divisors (32795949).

623122651 is a wasteful number, since it uses less digits than its factorization.

623122651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32795948.

The product of its digits is 4320, while the sum is 28.

The square root of 623122651 is about 24962.4247820599. The cubic root of 623122651 is about 854.1310556713.

Adding to 623122651 its reverse (156221326), we get a palindrome (779343977).

It can be divided in two parts, 6231 and 22651, that added together give a palindrome (28882).

The spelling of 623122651 in words is "six hundred twenty-three million, one hundred twenty-two thousand, six hundred fifty-one".