61345761 has 8 divisors (see below), whose sum is σ = 85350720. Its totient is φ = 39118992.

The previous prime is 61345733. The next prime is 61345777. The reversal of 61345761 is 16754316.

61345761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61345761 - 2¹⁰ = 61344737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61345721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 444466 + ... + 444603.

It is an arithmetic number, because the mean of its divisors is an integer number (10668840).

Almost surely, 2^61345761 is an apocalyptic number.

It is an amenable number.

61345761 is a deficient number, since it is larger than the sum of its proper divisors (24004959).

61345761 is a wasteful number, since it uses less digits than its factorization.

61345761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889095.

The product of its digits is 15120, while the sum is 33.

The square root of 61345761 is about 7832.3534777230. The cubic root of 61345761 is about 394.3920809474.

The spelling of 61345761 in words is "sixty-one million, three hundred forty-five thousand, seven hundred sixty-one".