67161301 has 2 divisors, whose sum is σ = 67161302. Its totient is φ = 67161300.

The previous prime is 67161299. The next prime is 67161329. The reversal of 67161301 is 10316176.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66438801 + 722500 = 8151^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 67161301 - 2¹ = 67161299 is a prime.

Together with 67161299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67161701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33580650 + 33580651.

It is an arithmetic number, because the mean of its divisors is an integer number (33580651).

Almost surely, 2^67161301 is an apocalyptic number.

It is an amenable number.

67161301 is a deficient number, since it is larger than the sum of its proper divisors (1).

67161301 is an equidigital number, since it uses as much as digits as its factorization.

67161301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 67161301 is about 8195.1998755369. The cubic root of 67161301 is about 406.4804850365.

Adding to 67161301 its reverse (10316176), we get a palindrome (77477477).

The spelling of 67161301 in words is "sixty-seven million, one hundred sixty-one thousand, three hundred one".