999065671 has 2 divisors, whose sum is σ = 999065672. Its totient is φ = 999065670.

The previous prime is 999065647. The next prime is 999065681. The reversal of 999065671 is 176560999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999065671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999065611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499532835 + 499532836.

It is an arithmetic number, because the mean of its divisors is an integer number (499532836).

Almost surely, 2^999065671 is an apocalyptic number.

999065671 is a deficient number, since it is larger than the sum of its proper divisors (1).

999065671 is an equidigital number, since it uses as much as digits as its factorization.

999065671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 999065671 is about 31608.0001107315. Note that the first 3 decimals coincide. The cubic root of 999065671 is about 999.6884599529.

The spelling of 999065671 in words is "nine hundred ninety-nine million, sixty-five thousand, six hundred seventy-one".