67371961 has 2 divisors, whose sum is σ = 67371962. Its totient is φ = 67371960.

The previous prime is 67371947. The next prime is 67371973. The reversal of 67371961 is 16917376.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 11943936 = 7445^2 + 3456^2 .

It is a cyclic number.

It is not a de Polignac number, because 67371961 - 2²⁵ = 33817529 is a prime.

It is a super-2 number, since 2×67371961² = 9077962257971042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67371361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33685980 + 33685981.

It is an arithmetic number, because the mean of its divisors is an integer number (33685981).

Almost surely, 2^67371961 is an apocalyptic number.

It is an amenable number.

67371961 is a deficient number, since it is larger than the sum of its proper divisors (1).

67371961 is an equidigital number, since it uses as much as digits as its factorization.

67371961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 67371961 is about 8208.0424584672. The cubic root of 67371961 is about 406.9050341168.

The spelling of 67371961 in words is "sixty-seven million, three hundred seventy-one thousand, nine hundred sixty-one".