61709741 has 2 divisors, whose sum is σ = 61709742. Its totient is φ = 61709740.

The previous prime is 61709729. The next prime is 61709743. The reversal of 61709741 is 14790716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51179716 + 10530025 = 7154^2 + 3245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61709741 is a prime.

Together with 61709743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61709743) 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 as a sum of consecutive naturals, namely, 30854870 + 30854871.

It is an arithmetic number, because the mean of its divisors is an integer number (30854871).

Almost surely, 2^61709741 is an apocalyptic number.

It is an amenable number.

61709741 is a deficient number, since it is larger than the sum of its proper divisors (1).

61709741 is an equidigital number, since it uses as much as digits as its factorization.

61709741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 61709741 is about 7855.5547862643. The cubic root of 61709741 is about 395.1705528504.

The spelling of 61709741 in words is "sixty-one million, seven hundred nine thousand, seven hundred forty-one".