61844895 has 48 divisors (see below), whose sum is σ = 129729600. Its totient is φ = 26606592.

The previous prime is 61844891. The next prime is 61844899. The reversal of 61844895 is 59844816.

It is an interprime number because it is at equal distance from previous prime (61844891) and next prime (61844899).

It is not a de Polignac number, because 61844895 - 2² = 61844891 is a prime.

It is a super-2 number, since 2×61844895² = 7649582075122050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61844895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61844891) 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 47 ways as a sum of consecutive naturals, for example, 420 + ... + 11129.

It is an arithmetic number, because the mean of its divisors is an integer number (2702700).

Almost surely, 2^61844895 is an apocalyptic number.

61844895 is an abundant number, since it is smaller than the sum of its proper divisors (67884705).

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

61844895 is a wasteful number, since it uses less digits than its factorization.

61844895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11584 (or 11581 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 61844895 is about 7864.1525290396. The cubic root of 61844895 is about 395.4588376286.

The spelling of 61844895 in words is "sixty-one million, eight hundred forty-four thousand, eight hundred ninety-five".