67082891 has 2 divisors, whose sum is σ = 67082892. Its totient is φ = 67082890.

The previous prime is 67082861. The next prime is 67082909. The reversal of 67082891 is 19828076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67082891 - 2²² = 62888587 is a prime.

It is a super-2 number, since 2×67082891² = 9000228529835762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67082801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33541445 + 33541446.

It is an arithmetic number, because the mean of its divisors is an integer number (33541446).

Almost surely, 2^67082891 is an apocalyptic number.

67082891 is a deficient number, since it is larger than the sum of its proper divisors (1).

67082891 is an equidigital number, since it uses as much as digits as its factorization.

67082891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 67082891 is about 8190.4145804715. The cubic root of 67082891 is about 406.3222364328.

The spelling of 67082891 in words is "sixty-seven million, eighty-two thousand, eight hundred ninety-one".