61740565 has 16 divisors (see below), whose sum is σ = 76982400. Its totient is φ = 47478592.

The previous prime is 61740551. The next prime is 61740571. The reversal of 61740565 is 56504716.

It is a happy number.

61740565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61740565 - 2¹¹ = 61738517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61740565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37326 + ... + 38944.

It is an arithmetic number, because the mean of its divisors is an integer number (4811400).

Almost surely, 2^61740565 is an apocalyptic number.

It is an amenable number.

61740565 is a deficient number, since it is larger than the sum of its proper divisors (15241835).

61740565 is a wasteful number, since it uses less digits than its factorization.

61740565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 61740565 is about 7857.5164651434. The cubic root of 61740565 is about 395.2363377621.

The spelling of 61740565 in words is "sixty-one million, seven hundred forty thousand, five hundred sixty-five".