622400623 has 8 divisors (see below), whose sum is σ = 686626416. Its totient is φ = 560510400.

The previous prime is 622400621. The next prime is 622400659. The reversal of 622400623 is 326004226.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 622400623 - 2¹ = 622400621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622400621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583333 + ... + 584398.

It is an arithmetic number, because the mean of its divisors is an integer number (85828302).

Almost surely, 2^622400623 is an apocalyptic number.

622400623 is a deficient number, since it is larger than the sum of its proper divisors (64225793).

622400623 is a wasteful number, since it uses less digits than its factorization.

622400623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167785.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 622400623 is about 24947.9582932151. The cubic root of 622400623 is about 853.8010270709.

Adding to 622400623 its reverse (326004226), we get a palindrome (948404849).

The spelling of 622400623 in words is "six hundred twenty-two million, four hundred thousand, six hundred twenty-three".