671584999 has 2 divisors, whose sum is σ = 671585000. Its totient is φ = 671584998.

The previous prime is 671584967. The next prime is 671585003. The reversal of 671584999 is 999485176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671584999 - 2⁵ = 671584967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671584919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335792499 + 335792500.

It is an arithmetic number, because the mean of its divisors is an integer number (335792500).

Almost surely, 2^671584999 is an apocalyptic number.

671584999 is a deficient number, since it is larger than the sum of its proper divisors (1).

671584999 is an equidigital number, since it uses as much as digits as its factorization.

671584999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 58.

The square root of 671584999 is about 25914.9570518649. The cubic root of 671584999 is about 875.7234828297.

The spelling of 671584999 in words is "six hundred seventy-one million, five hundred eighty-four thousand, nine hundred ninety-nine".