61844065 has 4 divisors (see below), whose sum is σ = 74212884. Its totient is φ = 49475248.

The previous prime is 61844059. The next prime is 61844077. The reversal of 61844065 is 56044816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10349089 + 51494976 = 3217^2 + 7176^2 .

It is a cyclic number.

It is not a de Polignac number, because 61844065 - 2⁷ = 61843937 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 61844065.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6184402 + ... + 6184411.

It is an arithmetic number, because the mean of its divisors is an integer number (18553221).

Almost surely, 2^61844065 is an apocalyptic number.

It is an amenable number.

61844065 is a deficient number, since it is larger than the sum of its proper divisors (12368819).

61844065 is a wasteful number, since it uses less digits than its factorization.

61844065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12368818.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 61844065 is about 7864.0997577599. The cubic root of 61844065 is about 395.4570685130.

The spelling of 61844065 in words is "sixty-one million, eight hundred forty-four thousand, sixty-five".