622306505 has 16 divisors (see below), whose sum is σ = 817963920. Its totient is φ = 452401152.

The previous prime is 622306501. The next prime is 622306523. The reversal of 622306505 is 505603226.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1449616 + 620856889 = 1204^2 + 24917^2 .

It is a cyclic number.

It is not a de Polignac number, because 622306505 - 2² = 622306501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (622306501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123764 + ... + 128693.

It is an arithmetic number, because the mean of its divisors is an integer number (51122745).

Almost surely, 2^622306505 is an apocalyptic number.

It is an amenable number.

622306505 is a deficient number, since it is larger than the sum of its proper divisors (195657415).

622306505 is a wasteful number, since it uses less digits than its factorization.

622306505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252508.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 622306505 is about 24946.0719352767. The cubic root of 622306505 is about 853.7579882880.

The spelling of 622306505 in words is "six hundred twenty-two million, three hundred six thousand, five hundred five".