630644061 has 8 divisors (see below), whose sum is σ = 877417920. Its totient is φ = 402149792.

The previous prime is 630644057. The next prime is 630644071. The reversal of 630644061 is 160446036.

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 630644061 - 2² = 630644057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630644071) 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, 4569816 + ... + 4569953.

It is an arithmetic number, because the mean of its divisors is an integer number (109677240).

Almost surely, 2^630644061 is an apocalyptic number.

It is an amenable number.

630644061 is a deficient number, since it is larger than the sum of its proper divisors (246773859).

630644061 is a wasteful number, since it uses less digits than its factorization.

630644061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139795.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 630644061 is about 25112.6275208310. The cubic root of 630644061 is about 857.5539204563.

The spelling of 630644061 in words is "six hundred thirty million, six hundred forty-four thousand, sixty-one".