630654513 has 4 divisors (see below), whose sum is σ = 840872688. Its totient is φ = 420436340.

The previous prime is 630654511. The next prime is 630654523. The reversal of 630654513 is 315456036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630654513 - 2¹ = 630654511 is a prime.

It is a super-2 number, since 2×630654513² = 795450229534534338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (630654511) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 105109083 + ... + 105109088.

It is an arithmetic number, because the mean of its divisors is an integer number (210218172).

Almost surely, 2^630654513 is an apocalyptic number.

It is an amenable number.

630654513 is a deficient number, since it is larger than the sum of its proper divisors (210218175).

630654513 is a wasteful number, since it uses less digits than its factorization.

630654513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210218174.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 630654513 is about 25112.8356224461. The cubic root of 630654513 is about 857.5586579961.

The spelling of 630654513 in words is "six hundred thirty million, six hundred fifty-four thousand, five hundred thirteen".