671007999 has 8 divisors (see below), whose sum is σ = 897839872. Its totient is φ = 445757400.

The previous prime is 671007983. The next prime is 671008001. The reversal of 671007999 is 999700176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671007999 - 2⁴ = 671007983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671007949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394327 + ... + 396024.

It is an arithmetic number, because the mean of its divisors is an integer number (112229984).

Almost surely, 2^671007999 is an apocalyptic number.

671007999 is a deficient number, since it is larger than the sum of its proper divisors (226831873).

671007999 is a wasteful number, since it uses less digits than its factorization.

671007999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790637.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 671007999 is about 25903.8220925021. The cubic root of 671007999 is about 875.4726149928.

The spelling of 671007999 in words is "six hundred seventy-one million, seven thousand, nine hundred ninety-nine".