61065775 has 6 divisors (see below), whose sum is σ = 75721592. Its totient is φ = 48852600.

The previous prime is 61065773. The next prime is 61065803. The reversal of 61065775 is 57756016.

It is not a de Polignac number, because 61065775 - 2¹ = 61065773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61065773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1221291 + ... + 1221340.

Almost surely, 2^61065775 is an apocalyptic number.

61065775 is a deficient number, since it is larger than the sum of its proper divisors (14655817).

61065775 is a wasteful number, since it uses less digits than its factorization.

61065775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442641 (or 2442636 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 61065775 is about 7814.4593542996. The cubic root of 61065775 is about 393.7911555201.

It can be divided in two parts, 6106 and 5775, that added together give a square (11881 = 109²).

The spelling of 61065775 in words is "sixty-one million, sixty-five thousand, seven hundred seventy-five".