61844536 has 48 divisors (see below), whose sum is σ = 126819000. Its totient is φ = 28259712.

The previous prime is 61844513. The next prime is 61844537. The reversal of 61844536 is 63544816.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61844495 and 61844504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61844537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201295 + ... + 201601.

Almost surely, 2^61844536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61844536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63409500).

61844536 is an abundant number, since it is smaller than the sum of its proper divisors (64974464).

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

61844536 is a wasteful number, since it uses less digits than its factorization.

61844536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 471 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 61844536 is about 7864.1297039151. The cubic root of 61844536 is about 395.4580724348.

It can be divided in two parts, 618 and 44536, that added together give a palindrome (45154).

The spelling of 61844536 in words is "sixty-one million, eight hundred forty-four thousand, five hundred thirty-six".