630722952 has 24 divisors (see below), whose sum is σ = 1708208190. Its totient is φ = 210240960.

The previous prime is 630722927. The next prime is 630722959. The reversal of 630722952 is 259227036.

It can be written as a sum of positive squares in only one way, i.e., 522853956 + 107868996 = 22866^2 + 10386^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×630722952² = 795622884359188608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (630722959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4379949 + ... + 4380092.

Almost surely, 2^630722952 is an apocalyptic number.

It is an amenable number.

630722952 is an abundant number, since it is smaller than the sum of its proper divisors (1077485238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630722952 is a wasteful number, since it uses less digits than its factorization.

630722952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760053 (or 8760046 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 630722952 is about 25114.1982153522. The cubic root of 630722952 is about 857.5896777980.

Adding to 630722952 its reverse (259227036), we get a palindrome (889949988).

The spelling of 630722952 in words is "six hundred thirty million, seven hundred twenty-two thousand, nine hundred fifty-two".