665143007 has 2 divisors, whose sum is σ = 665143008. Its totient is φ = 665143006.

The previous prime is 665143001. The next prime is 665143009. The reversal of 665143007 is 700341566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665143007 - 2⁶ = 665142943 is a prime.

It is a super-2 number, since 2×665143007² = 884830439522004098, which contains 22 as substring.

Together with 665143009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665143001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332571503 + 332571504.

It is an arithmetic number, because the mean of its divisors is an integer number (332571504).

Almost surely, 2^665143007 is an apocalyptic number.

665143007 is a deficient number, since it is larger than the sum of its proper divisors (1).

665143007 is an equidigital number, since it uses as much as digits as its factorization.

665143007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 665143007 is about 25790.3665542000. The cubic root of 665143007 is about 872.9144374190.

The spelling of 665143007 in words is "six hundred sixty-five million, one hundred forty-three thousand, seven".