670698911 has 4 divisors (see below), whose sum is σ = 674103672. Its totient is φ = 667294152.

The previous prime is 670698901. The next prime is 670698913. The reversal of 670698911 is 119896076.

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 670698911 - 2¹⁰ = 670697887 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 (670698913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702085 + ... + 1702478.

It is an arithmetic number, because the mean of its divisors is an integer number (168525918).

Almost surely, 2^670698911 is an apocalyptic number.

670698911 is a deficient number, since it is larger than the sum of its proper divisors (3404761).

670698911 is a wasteful number, since it uses less digits than its factorization.

670698911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404760.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 670698911 is about 25897.8553359154. The cubic root of 670698911 is about 875.3381706745.

The spelling of 670698911 in words is "six hundred seventy million, six hundred ninety-eight thousand, nine hundred eleven".