61079569 has 2 divisors, whose sum is σ = 61079570. Its totient is φ = 61079568.

The previous prime is 61079531. The next prime is 61079587. The reversal of 61079569 is 96597016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 473344 = 7785^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 61079569 - 2¹¹ = 61077521 is a prime.

It is a super-2 number, since 2×61079569² = 7461427498451522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61079069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30539784 + 30539785.

It is an arithmetic number, because the mean of its divisors is an integer number (30539785).

Almost surely, 2^61079569 is an apocalyptic number.

It is an amenable number.

61079569 is a deficient number, since it is larger than the sum of its proper divisors (1).

61079569 is an equidigital number, since it uses as much as digits as its factorization.

61079569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 61079569 is about 7815.3418991110. The cubic root of 61079569 is about 393.8208041313.

The spelling of 61079569 in words is "sixty-one million, seventy-nine thousand, five hundred sixty-nine".