61447266 has 12 divisors (see below), whose sum is σ = 133135782. Its totient is φ = 20482416.

The previous prime is 61447249. The next prime is 61447271. The reversal of 61447266 is 66274416.

61447266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 20115225 = 6429^2 + 4485^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61447266.

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 5 ways as a sum of consecutive naturals, for example, 1706851 + ... + 1706886.

Almost surely, 2^61447266 is an apocalyptic number.

61447266 is an abundant number, since it is smaller than the sum of its proper divisors (71688516).

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

61447266 is a wasteful number, since it uses less digits than its factorization.

61447266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413745 (or 3413742 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 61447266 is about 7838.8306525910. The cubic root of 61447266 is about 394.6094863986.

The spelling of 61447266 in words is "sixty-one million, four hundred forty-seven thousand, two hundred sixty-six".