630642577828 has 6 divisors (see below), whose sum is σ = 1103624511206. Its totient is φ = 315321288912.

The previous prime is 630642577811. The next prime is 630642577861. The reversal of 630642577828 is 828775246036.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 601940119104 + 28702458724 = 775848^2 + 169418^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 78830322225 + ... + 78830322232.

Almost surely, 2^630642577828 is an apocalyptic number.

It is an amenable number.

630642577828 is a deficient number, since it is larger than the sum of its proper divisors (472981933378).

630642577828 is a wasteful number, since it uses less digits than its factorization.

630642577828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157660644461 (or 157660644459 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 58.

The spelling of 630642577828 in words is "six hundred thirty billion, six hundred forty-two million, five hundred seventy-seven thousand, eight hundred twenty-eight".