61206563 has 16 divisors (see below), whose sum is σ = 69062112. Its totient is φ = 53760000.

The previous prime is 61206553. The next prime is 61206569. The reversal of 61206563 is 36560216.

61206563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61206563 - 2⁶ = 61206499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61206569) 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 15 ways as a sum of consecutive naturals, for example, 50363 + ... + 51563.

It is an arithmetic number, because the mean of its divisors is an integer number (4316382).

Almost surely, 2^61206563 is an apocalyptic number.

61206563 is a deficient number, since it is larger than the sum of its proper divisors (7855549).

61206563 is a wasteful number, since it uses less digits than its factorization.

61206563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 61206563 is about 7823.4623409332. The cubic root of 61206563 is about 394.0935535872.

Adding to 61206563 its reverse (36560216), we get a palindrome (97766779).

The spelling of 61206563 in words is "sixty-one million, two hundred six thousand, five hundred sixty-three".