61247886 has 16 divisors (see below), whose sum is σ = 139995264. Its totient is φ = 17499384.

The previous prime is 61247881. The next prime is 61247903. The reversal of 61247886 is 68874216.

61247886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1458283 = 61247886 / (6 + 1 + 2 + 4 + 7 + 8 + 8 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61247881) 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, 729100 + ... + 729183.

It is an arithmetic number, because the mean of its divisors is an integer number (8749704).

Almost surely, 2^61247886 is an apocalyptic number.

61247886 is an abundant number, since it is smaller than the sum of its proper divisors (78747378).

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

61247886 is a wasteful number, since it uses less digits than its factorization.

61247886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458295.

The product of its digits is 129024, while the sum is 42.

The square root of 61247886 is about 7826.1028615780. The cubic root of 61247886 is about 394.1822230783.

The spelling of 61247886 in words is "sixty-one million, two hundred forty-seven thousand, eight hundred eighty-six".