61224218 has 16 divisors (see below), whose sum is σ = 100910880. Its totient is φ = 27627600.

The previous prime is 61224211. The next prime is 61224227. The reversal of 61224218 is 81242216.

It is a happy number.

61224218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61224211) 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, 6953 + ... + 13068.

It is an arithmetic number, because the mean of its divisors is an integer number (6306930).

Almost surely, 2^61224218 is an apocalyptic number.

61224218 is a deficient number, since it is larger than the sum of its proper divisors (39686662).

61224218 is a wasteful number, since it uses less digits than its factorization.

61224218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20173.

The product of its digits is 1536, while the sum is 26.

The square root of 61224218 is about 7824.5905963188. The cubic root of 61224218 is about 394.1314419686.

The spelling of 61224218 in words is "sixty-one million, two hundred twenty-four thousand, two hundred eighteen".