64067161 has 2 divisors, whose sum is σ = 64067162. Its totient is φ = 64067160.

The previous prime is 64067149. The next prime is 64067191. The reversal of 64067161 is 16176046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62900761 + 1166400 = 7931^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 64067161 - 2⁹ = 64066649 is a prime.

It is a super-2 number, since 2×64067161² = 8209202237199842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64067131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32033580 + 32033581.

It is an arithmetic number, because the mean of its divisors is an integer number (32033581).

Almost surely, 2^64067161 is an apocalyptic number.

It is an amenable number.

64067161 is a deficient number, since it is larger than the sum of its proper divisors (1).

64067161 is an equidigital number, since it uses as much as digits as its factorization.

64067161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 64067161 is about 8004.1964618567. The cubic root of 64067161 is about 400.1398698354.

The spelling of 64067161 in words is "sixty-four million, sixty-seven thousand, one hundred sixty-one".