61785222 has 32 divisors (see below), whose sum is σ = 129911040. Its totient is φ = 19551840.

The previous prime is 61785221. The next prime is 61785223. The reversal of 61785222 is 22258716.

61785222 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 (61785221) and next prime (61785223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61785221) 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, 17572 + ... + 20792.

It is an arithmetic number, because the mean of its divisors is an integer number (4059720).

Almost surely, 2^61785222 is an apocalyptic number.

61785222 is an abundant number, since it is smaller than the sum of its proper divisors (68125818).

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

61785222 is a wasteful number, since it uses less digits than its factorization.

61785222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388.

The product of its digits is 13440, while the sum is 33.

The square root of 61785222 is about 7860.3576254519. The cubic root of 61785222 is about 395.3316063828.

The spelling of 61785222 in words is "sixty-one million, seven hundred eighty-five thousand, two hundred twenty-two".