630356561 has 8 divisors (see below), whose sum is σ = 658320000. Its totient is φ = 602439552.

The previous prime is 630356543. The next prime is 630356593. The reversal of 630356561 is 165653036.

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

It is a de Polignac number, because none of the positive numbers 2^k-630356561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630356861) 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, 17756 + ... + 39698.

It is an arithmetic number, because the mean of its divisors is an integer number (82290000).

Almost surely, 2^630356561 is an apocalyptic number.

It is an amenable number.

630356561 is a deficient number, since it is larger than the sum of its proper divisors (27963439).

630356561 is a wasteful number, since it uses less digits than its factorization.

630356561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23215.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 630356561 is about 25106.9026564409. The cubic root of 630356561 is about 857.4235858548.

It can be divided in two parts, 63035 and 6561, that added together give a palindrome (69596).

The spelling of 630356561 in words is "six hundred thirty million, three hundred fifty-six thousand, five hundred sixty-one".