630223613 has 4 divisors (see below), whose sum is σ = 630313248. Its totient is φ = 630133980.

The previous prime is 630223547. The next prime is 630223631. The reversal of 630223613 is 316322036.

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 630223613 - 2¹² = 630219517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630283613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33281 + ... + 48662.

It is an arithmetic number, because the mean of its divisors is an integer number (157578312).

Almost surely, 2^630223613 is an apocalyptic number.

It is an amenable number.

630223613 is a deficient number, since it is larger than the sum of its proper divisors (89635).

630223613 is an equidigital number, since it uses as much as digits as its factorization.

630223613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89634.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 630223613 is about 25104.2548784066. The cubic root of 630223613 is about 857.3633021080.

Adding to 630223613 its reverse (316322036), we get a palindrome (946545649).

The spelling of 630223613 in words is "six hundred thirty million, two hundred twenty-three thousand, six hundred thirteen".