61227861 has 16 divisors (see below), whose sum is σ = 86745600. Its totient is φ = 38305008.

The previous prime is 61227857. The next prime is 61227869. The reversal of 61227861 is 16872216.

61227861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61227861 - 2² = 61227857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61227869) 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 15 ways as a sum of consecutive naturals, for example, 1080 + ... + 11118.

It is an arithmetic number, because the mean of its divisors is an integer number (5421600).

Almost surely, 2^61227861 is an apocalyptic number.

It is an amenable number.

61227861 is a deficient number, since it is larger than the sum of its proper divisors (25517739).

61227861 is a wasteful number, since it uses less digits than its factorization.

61227861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168.

The product of its digits is 8064, while the sum is 33.

The square root of 61227861 is about 7824.8233845883. The cubic root of 61227861 is about 394.1392590951.

The spelling of 61227861 in words is "sixty-one million, two hundred twenty-seven thousand, eight hundred sixty-one".