61564422 has 32 divisors (see below), whose sum is σ = 128878848. Its totient is φ = 19568736.

The previous prime is 61564421. The next prime is 61564423. The reversal of 61564422 is 22446516.

61564422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61564421) and next prime (61564423).

It is a self number, because there is not a number n which added to its sum of digits gives 61564422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61564421) 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, 71748 + ... + 72600.

It is an arithmetic number, because the mean of its divisors is an integer number (4027464).

Almost surely, 2^61564422 is an apocalyptic number.

61564422 is an abundant number, since it is smaller than the sum of its proper divisors (67314426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61564422 is a wasteful number, since it uses less digits than its factorization.

61564422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its digits is 11520, while the sum is 30.

The square root of 61564422 is about 7846.2998923059. The cubic root of 61564422 is about 394.8601160396.

The spelling of 61564422 in words is "sixty-one million, five hundred sixty-four thousand, four hundred twenty-two".