671988038 has 8 divisors (see below), whose sum is σ = 1014166488. Its totient is φ = 333932544.

The previous prime is 671987989. The next prime is 671988071. The reversal of 671988038 is 830889176.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030331 + ... + 1030982.

It is an arithmetic number, because the mean of its divisors is an integer number (126770811).

Almost surely, 2^671988038 is an apocalyptic number.

671988038 is a deficient number, since it is larger than the sum of its proper divisors (342178450).

671988038 is a wasteful number, since it uses less digits than its factorization.

671988038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061478.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 671988038 is about 25922.7320705207. The cubic root of 671988038 is about 875.8986307436.

The spelling of 671988038 in words is "six hundred seventy-one million, nine hundred eighty-eight thousand, thirty-eight".