626228628629 has 4 divisors (see below), whose sum is σ = 626533661676. Its totient is φ = 625923595584.

The previous prime is 626228628607. The next prime is 626228628653. The reversal of 626228628629 is 926826822626.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145843791025 + 480384837604 = 381895^2 + 693098^2 .

It is a cyclic number.

It is not a de Polignac number, because 626228628629 - 2⁸ = 626228628373 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 (626228628029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152513444 + ... + 152517549.

It is an arithmetic number, because the mean of its divisors is an integer number (156633415419).

Almost surely, 2^626228628629 is an apocalyptic number.

It is an amenable number.

626228628629 is a deficient number, since it is larger than the sum of its proper divisors (305033047).

626228628629 is a wasteful number, since it uses less digits than its factorization.

626228628629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305033046.

The product of its digits is 23887872, while the sum is 59.

The spelling of 626228628629 in words is "six hundred twenty-six billion, two hundred twenty-eight million, six hundred twenty-eight thousand, six hundred twenty-nine".