670139803 has 4 divisors (see below), whose sum is σ = 691757248. Its totient is φ = 648522360.

The previous prime is 670139797. The next prime is 670139807. The reversal of 670139803 is 308931076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670139803 - 2²¹ = 668042651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670139807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10808676 + ... + 10808737.

It is an arithmetic number, because the mean of its divisors is an integer number (172939312).

Almost surely, 2^670139803 is an apocalyptic number.

670139803 is a deficient number, since it is larger than the sum of its proper divisors (21617445).

670139803 is a wasteful number, since it uses less digits than its factorization.

670139803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21617444.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 670139803 is about 25887.0586007758. The cubic root of 670139803 is about 875.0948699313.

The spelling of 670139803 in words is "six hundred seventy million, one hundred thirty-nine thousand, eight hundred three".