65278067 has 2 divisors, whose sum is σ = 65278068. Its totient is φ = 65278066.

The previous prime is 65278063. The next prime is 65278093. The reversal of 65278067 is 76087256.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65278067 - 2² = 65278063 is a prime.

It is a super-2 number, since 2×65278067² = 8522452062512978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65278063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32639033 + 32639034.

It is an arithmetic number, because the mean of its divisors is an integer number (32639034).

Almost surely, 2^65278067 is an apocalyptic number.

65278067 is a deficient number, since it is larger than the sum of its proper divisors (1).

65278067 is an equidigital number, since it uses as much as digits as its factorization.

65278067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 65278067 is about 8079.4843276041. The cubic root of 65278067 is about 402.6451095166.

The spelling of 65278067 in words is "sixty-five million, two hundred seventy-eight thousand, sixty-seven".