61824861 has 24 divisors (see below), whose sum is σ = 103796160. Its totient is φ = 34727616.

The previous prime is 61824859. The next prime is 61824901. The reversal of 61824861 is 16842816.

It is not a de Polignac number, because 61824861 - 2¹ = 61824859 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 (61824811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4600 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (4324840).

Almost surely, 2^61824861 is an apocalyptic number.

It is an amenable number.

61824861 is a deficient number, since it is larger than the sum of its proper divisors (41971299).

61824861 is a wasteful number, since it uses less digits than its factorization.

61824861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16705 (or 16702 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 61824861 is about 7862.8786713264. The cubic root of 61824861 is about 395.4161314468.

The spelling of 61824861 in words is "sixty-one million, eight hundred twenty-four thousand, eight hundred sixty-one".