671069213 has 4 divisors (see below), whose sum is σ = 679563840. Its totient is φ = 662574588.

The previous prime is 671069177. The next prime is 671069221. The reversal of 671069213 is 312960176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671069213 - 2¹² = 671065117 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 (671063213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4247195 + ... + 4247352.

It is an arithmetic number, because the mean of its divisors is an integer number (169890960).

Almost surely, 2^671069213 is an apocalyptic number.

It is an amenable number.

671069213 is a deficient number, since it is larger than the sum of its proper divisors (8494627).

671069213 is an equidigital number, since it uses as much as digits as its factorization.

671069213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8494626.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 671069213 is about 25905.0036286429. The cubic root of 671069213 is about 875.4992364097.

The spelling of 671069213 in words is "six hundred seventy-one million, sixty-nine thousand, two hundred thirteen".