6719971 has 4 divisors (see below), whose sum is σ = 6727744. Its totient is φ = 6712200.

The previous prime is 6719969. The next prime is 6719983. The reversal of 6719971 is 1799176.

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 6719971 - 2¹ = 6719969 is a prime.

It is a Duffinian number.

6719971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6719371) 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, 2400 + ... + 4381.

It is an arithmetic number, because the mean of its divisors is an integer number (1681936).

Almost surely, 2^6719971 is an apocalyptic number.

6719971 is a deficient number, since it is larger than the sum of its proper divisors (7773).

6719971 is an equidigital number, since it uses as much as digits as its factorization.

6719971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772.

The product of its digits is 23814, while the sum is 40.

The square root of 6719971 is about 2592.2906858607. The cubic root of 6719971 is about 188.7074877577.

The spelling of 6719971 in words is "six million, seven hundred nineteen thousand, nine hundred seventy-one".