64061161 has 2 divisors, whose sum is σ = 64061162. Its totient is φ = 64061160.

The previous prime is 64061093. The next prime is 64061167. The reversal of 64061161 is 16116046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 20250000 = 6619^2 + 4500^2 .

It is a cyclic number.

It is not a de Polignac number, because 64061161 - 2⁹ = 64060649 is a prime.

It is not a weakly prime, because it can be changed into another prime (64061167) 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, 32030580 + 32030581.

It is an arithmetic number, because the mean of its divisors is an integer number (32030581).

Almost surely, 2^64061161 is an apocalyptic number.

It is an amenable number.

64061161 is a deficient number, since it is larger than the sum of its proper divisors (1).

64061161 is an equidigital number, since it uses as much as digits as its factorization.

64061161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 64061161 is about 8003.8216496871. The cubic root of 64061161 is about 400.1273781827.

The spelling of 64061161 in words is "sixty-four million, sixty-one thousand, one hundred sixty-one".