630621013 has 8 divisors (see below), whose sum is σ = 689925600. Its totient is φ = 571645680.

The previous prime is 630621011. The next prime is 630621049. The reversal of 630621013 is 310126036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 630621013 - 2¹ = 630621011 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 (630621011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78295 + ... + 85972.

It is an arithmetic number, because the mean of its divisors is an integer number (86240700).

Almost surely, 2^630621013 is an apocalyptic number.

It is an amenable number.

630621013 is a deficient number, since it is larger than the sum of its proper divisors (59304587).

630621013 is a wasteful number, since it uses less digits than its factorization.

630621013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164627.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 630621013 is about 25112.1686239958. The cubic root of 630621013 is about 857.5434733886.

Adding to 630621013 its reverse (310126036), we get a palindrome (940747049).

The spelling of 630621013 in words is "six hundred thirty million, six hundred twenty-one thousand, thirteen".