61038565 has 16 divisors (see below), whose sum is σ = 85420800. Its totient is φ = 41853840.

The previous prime is 61038553. The next prime is 61038581. The reversal of 61038565 is 56583016.

It is not a de Polignac number, because 61038565 - 2⁷ = 61038437 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 61038565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16081 + ... + 19510.

It is an arithmetic number, because the mean of its divisors is an integer number (5338800).

Almost surely, 2^61038565 is an apocalyptic number.

It is an amenable number.

61038565 is a deficient number, since it is larger than the sum of its proper divisors (24382235).

61038565 is an equidigital number, since it uses as much as digits as its factorization.

61038565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35617 (or 35603 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 61038565 is about 7812.7181569541. The cubic root of 61038565 is about 393.7326576724.

The spelling of 61038565 in words is "sixty-one million, thirty-eight thousand, five hundred sixty-five".