630047122 has 4 divisors (see below), whose sum is σ = 945070686. Its totient is φ = 315023560.

The previous prime is 630047111. The next prime is 630047147. The reversal of 630047122 is 221740036.

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

It can be written as a sum of positive squares in only one way, i.e., 592971201 + 37075921 = 24351^2 + 6089^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 157511779 + ... + 157511782.

Almost surely, 2^630047122 is an apocalyptic number.

630047122 is a deficient number, since it is larger than the sum of its proper divisors (315023564).

630047122 is a wasteful number, since it uses less digits than its factorization.

630047122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315023563.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 630047122 is about 25100.7394711789. The cubic root of 630047122 is about 857.2832611877.

Adding to 630047122 its reverse (221740036), we get a palindrome (851787158).

The spelling of 630047122 in words is "six hundred thirty million, forty-seven thousand, one hundred twenty-two".