61040789 has 4 divisors (see below), whose sum is σ = 62192556. Its totient is φ = 59889024.

The previous prime is 61040783. The next prime is 61040797. The reversal of 61040789 is 98704016.

61040789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31696900 + 29343889 = 5630^2 + 5417^2 .

It is a cyclic number.

It is not a de Polignac number, because 61040789 - 2⁸ = 61040533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61040783) 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 3 ways as a sum of consecutive naturals, for example, 575804 + ... + 575909.

It is an arithmetic number, because the mean of its divisors is an integer number (15548139).

Almost surely, 2^61040789 is an apocalyptic number.

It is an amenable number.

61040789 is a deficient number, since it is larger than the sum of its proper divisors (1151767).

61040789 is a wasteful number, since it uses less digits than its factorization.

61040789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151766.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 61040789 is about 7812.8604876831. The cubic root of 61040789 is about 393.7374396262.

The spelling of 61040789 in words is "sixty-one million, forty thousand, seven hundred eighty-nine".