622640631 has 16 divisors (see below), whose sum is σ = 853977600. Its totient is φ = 403326528.

The previous prime is 622640609. The next prime is 622640671. The reversal of 622640631 is 136046226.

It is not a de Polignac number, because 622640631 - 2⁷ = 622640503 is a prime.

It is a super-2 number, since 2×622640631² = 775362710744156322, which contains 22 as substring.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622640671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3715 + ... + 35483.

It is an arithmetic number, because the mean of its divisors is an integer number (53373600).

Almost surely, 2^622640631 is an apocalyptic number.

622640631 is a deficient number, since it is larger than the sum of its proper divisors (231336969).

622640631 is a wasteful number, since it uses less digits than its factorization.

622640631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31958.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 622640631 is about 24952.7680027688. The cubic root of 622640631 is about 853.9107595781.

Adding to 622640631 its reverse (136046226), we get a palindrome (758686857).

The spelling of 622640631 in words is "six hundred twenty-two million, six hundred forty thousand, six hundred thirty-one".