61220274 has 16 divisors (see below), whose sum is σ = 125750208. Its totient is φ = 19855152.

The previous prime is 61220267. The next prime is 61220287. The reversal of 61220274 is 47202216.

61220274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 137662 + ... + 138105.

It is an arithmetic number, because the mean of its divisors is an integer number (7859388).

Almost surely, 2^61220274 is an apocalyptic number.

61220274 is an abundant number, since it is smaller than the sum of its proper divisors (64529934).

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

61220274 is a wasteful number, since it uses less digits than its factorization.

61220274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275809.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 61220274 is about 7824.3385662943. The cubic root of 61220274 is about 394.1229786087.

The spelling of 61220274 in words is "sixty-one million, two hundred twenty thousand, two hundred seventy-four".