61107747 has 4 divisors (see below), whose sum is σ = 81477000. Its totient is φ = 40738496.

The previous prime is 61107733. The next prime is 61107751. The reversal of 61107747 is 74770116.

61107747 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 is a cyclic number.

It is not a de Polignac number, because 61107747 - 2¹⁰ = 61106723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61107797) 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, 10184622 + ... + 10184627.

It is an arithmetic number, because the mean of its divisors is an integer number (20369250).

Almost surely, 2^61107747 is an apocalyptic number.

61107747 is a deficient number, since it is larger than the sum of its proper divisors (20369253).

61107747 is a wasteful number, since it uses less digits than its factorization.

61107747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20369252.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 61107747 is about 7817.1444274748. The cubic root of 61107747 is about 393.8813556204.

The spelling of 61107747 in words is "sixty-one million, one hundred seven thousand, seven hundred forty-seven".