665036167 has 2 divisors, whose sum is σ = 665036168. Its totient is φ = 665036166.

The previous prime is 665036159. The next prime is 665036201. The reversal of 665036167 is 761630566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665036167 - 2³ = 665036159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665036147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332518083 + 332518084.

It is an arithmetic number, because the mean of its divisors is an integer number (332518084).

Almost surely, 2^665036167 is an apocalyptic number.

665036167 is a deficient number, since it is larger than the sum of its proper divisors (1).

665036167 is an equidigital number, since it uses as much as digits as its factorization.

665036167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 665036167 is about 25788.2951549729. The cubic root of 665036167 is about 872.8676970080.

The spelling of 665036167 in words is "six hundred sixty-five million, thirty-six thousand, one hundred sixty-seven".