61286671 has 4 divisors (see below), whose sum is σ = 61302352. Its totient is φ = 61270992.

The previous prime is 61286623. The next prime is 61286707. The reversal of 61286671 is 17668216.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61286671 - 2¹¹ = 61284623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61286671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61286471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3286 + ... + 11548.

It is an arithmetic number, because the mean of its divisors is an integer number (15325588).

Almost surely, 2^61286671 is an apocalyptic number.

61286671 is a deficient number, since it is larger than the sum of its proper divisors (15681).

61286671 is an equidigital number, since it uses as much as digits as its factorization.

61286671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680.

The product of its digits is 24192, while the sum is 37.

The square root of 61286671 is about 7828.5803949375. The cubic root of 61286671 is about 394.2654103389.

The spelling of 61286671 in words is "sixty-one million, two hundred eighty-six thousand, six hundred seventy-one".