61386861 has 8 divisors (see below), whose sum is σ = 81885600. Its totient is φ = 40906352.

The previous prime is 61386859. The next prime is 61386877. The reversal of 61386861 is 16868316.

61386861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61386861 - 2¹ = 61386859 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61386821) 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, 9490 + ... + 14588.

It is an arithmetic number, because the mean of its divisors is an integer number (10235700).

Almost surely, 2^61386861 is an apocalyptic number.

It is an amenable number.

61386861 is a deficient number, since it is larger than the sum of its proper divisors (20498739).

61386861 is a wasteful number, since it uses less digits than its factorization.

61386861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9115.

The product of its digits is 41472, while the sum is 39.

The square root of 61386861 is about 7834.9767708654. The cubic root of 61386861 is about 394.4801386259.

The spelling of 61386861 in words is "sixty-one million, three hundred eighty-six thousand, eight hundred sixty-one".