61630563 has 8 divisors (see below), whose sum is σ = 82355728. Its totient is φ = 40996224.

The previous prime is 61630519. The next prime is 61630577. The reversal of 61630563 is 36503616.

61630563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61630563 - 2¹³ = 61622371 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61630563.

It is not an unprimeable number, because it can be changed into a prime (61630963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21106 + ... + 23847.

It is an arithmetic number, because the mean of its divisors is an integer number (10294466).

Almost surely, 2^61630563 is an apocalyptic number.

61630563 is a deficient number, since it is larger than the sum of its proper divisors (20725165).

61630563 is a wasteful number, since it uses less digits than its factorization.

61630563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45413.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 61630563 is about 7850.5135500807. The cubic root of 61630563 is about 395.0014698444.

The spelling of 61630563 in words is "sixty-one million, six hundred thirty thousand, five hundred sixty-three".