630297851569 has 9 divisors (see below), whose sum is σ = 633019135449. Its totient is φ = 627588226500.

The previous prime is 630297851567. The next prime is 630297851611. The reversal of 630297851569 is 965158792036.

The square root of 630297851569 is 793913.

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

630297851569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 630297851569 - 2¹ = 630297851567 is a prime.

It is a super-2 number, since 2×630297851569² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630297851567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 199270582 + ... + 199273744.

Almost surely, 2^630297851569 is an apocalyptic number.

630297851569 is the 793913-rd square number.

630297851569 is the 396957-th centered octagonal number.

It is an amenable number.

630297851569 is a deficient number, since it is larger than the sum of its proper divisors (2721283880).

630297851569 is an frugal number, since it uses more digits than its factorization.

630297851569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828 (or 3414 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 630297851569 in words is "six hundred thirty billion, two hundred ninety-seven million, eight hundred fifty-one thousand, five hundred sixty-nine".