634266628 has 12 divisors (see below), whose sum is σ = 1110560220. Its totient is φ = 316963712.

The previous prime is 634266623. The next prime is 634266637. The reversal of 634266628 is 826662436.

It can be written as a sum of positive squares in 2 ways, for example, as 529368064 + 104898564 = 23008^2 + 10242^2 .

It is not an unprimeable number, because it can be changed into a prime (634266623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33793 + ... + 49096.

It is an arithmetic number, because the mean of its divisors is an integer number (92546685).

Almost surely, 2^634266628 is an apocalyptic number.

It is an amenable number.

634266628 is a deficient number, since it is larger than the sum of its proper divisors (476293592).

634266628 is a wasteful number, since it uses less digits than its factorization.

634266628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84806 (or 84804 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

The square root of 634266628 is about 25184.6506428023. The cubic root of 634266628 is about 859.1927832165.

The spelling of 634266628 in words is "six hundred thirty-four million, two hundred sixty-six thousand, six hundred twenty-eight".