61220706 has 16 divisors (see below), whose sum is σ = 129644064. Its totient is φ = 19206464.

The previous prime is 61220699. The next prime is 61220707. The reversal of 61220706 is 60702216.

It is a happy number.

61220706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61220707) 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, 300000 + ... + 300203.

It is an arithmetic number, because the mean of its divisors is an integer number (8102754).

Almost surely, 2^61220706 is an apocalyptic number.

61220706 is an abundant number, since it is smaller than the sum of its proper divisors (68423358).

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

61220706 is a wasteful number, since it uses less digits than its factorization.

61220706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600225.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 61220706 is about 7824.3661724129. The cubic root of 61220706 is about 394.1239056476.

The spelling of 61220706 in words is "sixty-one million, two hundred twenty thousand, seven hundred six".