61066727 has 4 divisors (see below), whose sum is σ = 61752960. Its totient is φ = 60380496.

The previous prime is 61066717. The next prime is 61066729. The reversal of 61066727 is 72766016.

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 61066727 - 2¹⁴ = 61050343 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 (61066729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342983 + ... + 343160.

It is an arithmetic number, because the mean of its divisors is an integer number (15438240).

Almost surely, 2^61066727 is an apocalyptic number.

61066727 is a deficient number, since it is larger than the sum of its proper divisors (686233).

61066727 is an equidigital number, since it uses as much as digits as its factorization.

61066727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686232.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 61066727 is about 7814.5202667854. The cubic root of 61066727 is about 393.7932018777.

The spelling of 61066727 in words is "sixty-one million, sixty-six thousand, seven hundred twenty-seven".