630561526 has 8 divisors (see below), whose sum is σ = 1080962640. Its totient is φ = 270240648.

The previous prime is 630561523. The next prime is 630561527. The reversal of 630561526 is 625165036.

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

It is a junction number, because it is equal to n+sod(n) for n = 630561491 and 630561500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630561521) 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 3 ways as a sum of consecutive naturals, for example, 22520041 + ... + 22520068.

It is an arithmetic number, because the mean of its divisors is an integer number (135120330).

Almost surely, 2^630561526 is an apocalyptic number.

630561526 is a deficient number, since it is larger than the sum of its proper divisors (450401114).

630561526 is a wasteful number, since it uses less digits than its factorization.

630561526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45040118.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 630561526 is about 25110.9841702789. The cubic root of 630561526 is about 857.5165082798.

The spelling of 630561526 in words is "six hundred thirty million, five hundred sixty-one thousand, five hundred twenty-six".