622625637 has 8 divisors (see below), whose sum is σ = 838726336. Its totient is φ = 410804352.

The previous prime is 622625587. The next prime is 622625639. The reversal of 622625637 is 736526226.

It is a happy number.

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

It is not a de Polignac number, because 622625637 - 2¹⁵ = 622592869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 622625595 and 622625604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622625639) 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 7 ways as a sum of consecutive naturals, for example, 1069513 + ... + 1070094.

It is an arithmetic number, because the mean of its divisors is an integer number (104840792).

Almost surely, 2^622625637 is an apocalyptic number.

It is an amenable number.

622625637 is a deficient number, since it is larger than the sum of its proper divisors (216100699).

622625637 is a wasteful number, since it uses less digits than its factorization.

622625637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139707.

The product of its digits is 181440, while the sum is 39.

The square root of 622625637 is about 24952.4675533303. The cubic root of 622625637 is about 853.9039050941.

The spelling of 622625637 in words is "six hundred twenty-two million, six hundred twenty-five thousand, six hundred thirty-seven".