61006565 has 16 divisors (see below), whose sum is σ = 75962880. Its totient is φ = 46999680.

The previous prime is 61006559. The next prime is 61006571. The reversal of 61006565 is 56560016.

It is an interprime number because it is at equal distance from previous prime (61006559) and next prime (61006571).

It is not a de Polignac number, because 61006565 - 2¹⁰ = 61005541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14312 + ... + 18078.

It is an arithmetic number, because the mean of its divisors is an integer number (4747680).

Almost surely, 2^61006565 is an apocalyptic number.

It is an amenable number.

61006565 is a deficient number, since it is larger than the sum of its proper divisors (14956315).

61006565 is a wasteful number, since it uses less digits than its factorization.

61006565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 61006565 is about 7810.6699456577. The cubic root of 61006565 is about 393.6638397184.

The spelling of 61006565 in words is "sixty-one million, six thousand, five hundred sixty-five".