61161769 has 2 divisors, whose sum is σ = 61161770. Its totient is φ = 61161768.

The previous prime is 61161757. The next prime is 61161811. The reversal of 61161769 is 96716116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54582544 + 6579225 = 7388^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 61161769 - 2¹⁵ = 61129001 is a prime.

It is a super-2 number, since 2×61161769² = 7481523974418722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61161739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30580884 + 30580885.

It is an arithmetic number, because the mean of its divisors is an integer number (30580885).

Almost surely, 2^61161769 is an apocalyptic number.

It is an amenable number.

61161769 is a deficient number, since it is larger than the sum of its proper divisors (1).

61161769 is an equidigital number, since it uses as much as digits as its factorization.

61161769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 61161769 is about 7820.5990179781. The cubic root of 61161769 is about 393.9973910518.

The spelling of 61161769 in words is "sixty-one million, one hundred sixty-one thousand, seven hundred sixty-nine".