630662769 has 27 divisors (see below), whose sum is σ = 1002617707. Its totient is φ = 381717600.

The previous prime is 630662671. The next prime is 630662771. The reversal of 630662769 is 967266036.

The square root of 630662769 is 25113.

It is a perfect power (a square), and thus also a powerful number.

630662769 is a `hidden beast` number, since 630 + 6 + 6 + 2 + 7 + 6 + 9 = 666.

630662769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1656369 + 629006400 = 1287^2 + 25080^2 .

It is not a de Polignac number, because 630662769 - 2¹¹ = 630660721 is a prime.

It is a super-2 number, since 2×630662769² = 795471056405494722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630660769) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 828349 + ... + 829109.

Almost surely, 2^630662769 is an apocalyptic number.

630662769 is the 25113-rd square number.

630662769 is the 12557-th centered octagonal number.

It is an amenable number.

630662769 is a deficient number, since it is larger than the sum of its proper divisors (371954938).

630662769 is an equidigital number, since it uses as much as digits as its factorization.

630662769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The cubic root of 630662769 is about 857.5624001260.

The spelling of 630662769 in words is "six hundred thirty million, six hundred sixty-two thousand, seven hundred sixty-nine".