3661244565 has 32 divisors (see below), whose sum is σ = 6393983616. Its totient is φ = 1774191360.

The previous prime is 3661244563. The next prime is 3661244569. The reversal of 3661244565 is 5654421663.

It is not a de Polignac number, because 3661244565 - 2¹ = 3661244563 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 (3661244563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373507 + ... + 383183.

It is an arithmetic number, because the mean of its divisors is an integer number (199811988).

Almost surely, 2^3661244565 is an apocalyptic number.

It is an amenable number.

3661244565 is a deficient number, since it is larger than the sum of its proper divisors (2732739051).

3661244565 is a wasteful number, since it uses less digits than its factorization.

3661244565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989.

The product of its digits is 518400, while the sum is 42.

The square root of 3661244565 is about 60508.2189871756. The cubic root of 3661244565 is about 1541.2612040054.

The spelling of 3661244565 in words is "three billion, six hundred sixty-one million, two hundred forty-four thousand, five hundred sixty-five".