61222785 has 24 divisors (see below), whose sum is σ = 106075584. Its totient is φ = 30139200.

The previous prime is 61222781. The next prime is 61222789. The reversal of 61222785 is 58722216.

61222785 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 (61222781) and next prime (61222789).

It is not a de Polignac number, because 61222785 - 2² = 61222781 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61222781) 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 23 ways as a sum of consecutive naturals, for example, 9541 + ... + 14610.

It is an arithmetic number, because the mean of its divisors is an integer number (4419816).

Almost surely, 2^61222785 is an apocalyptic number.

61222785 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61222785 is a deficient number, since it is larger than the sum of its proper divisors (44852799).

61222785 is a wasteful number, since it uses less digits than its factorization.

61222785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24185 (or 24172 counting only the distinct ones).

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

The square root of 61222785 is about 7824.4990254968. The cubic root of 61222785 is about 394.1283669613.

The spelling of 61222785 in words is "sixty-one million, two hundred twenty-two thousand, seven hundred eighty-five".