630660081 has 8 divisors (see below), whose sum is σ = 851524480. Its totient is φ = 415117872.

The previous prime is 630660077. The next prime is 630660109. The reversal of 630660081 is 180066036.

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

It is not a de Polignac number, because 630660081 - 2² = 630660077 is a prime.

It is a super-2 number, since 2×630660081² = 795464275533853122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630660281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1330270 + ... + 1330743.

It is an arithmetic number, because the mean of its divisors is an integer number (106440560).

Almost surely, 2^630660081 is an apocalyptic number.

It is an amenable number.

630660081 is a deficient number, since it is larger than the sum of its proper divisors (220864399).

630660081 is a wasteful number, since it uses less digits than its factorization.

630660081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661095.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 630660081 is about 25112.9464818448. The cubic root of 630660081 is about 857.5611817617.

The spelling of 630660081 in words is "six hundred thirty million, six hundred sixty thousand, eighty-one".