6710722021 has 4 divisors (see below), whose sum is σ = 6729415200. Its totient is φ = 6692028844.

The previous prime is 6710721973. The next prime is 6710722049. The reversal of 6710722021 is 1202270176.

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 6710722021 - 2⁹ = 6710721509 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 (6710722621) 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, 9346051 + ... + 9346768.

It is an arithmetic number, because the mean of its divisors is an integer number (1682353800).

Almost surely, 2^6710722021 is an apocalyptic number.

It is an amenable number.

6710722021 is a deficient number, since it is larger than the sum of its proper divisors (18693179).

6710722021 is a wasteful number, since it uses less digits than its factorization.

6710722021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18693178.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 6710722021 is about 81918.9967040613. The cubic root of 6710722021 is about 1886.2087265481.

Adding to 6710722021 its reverse (1202270176), we get a palindrome (7912992197).

The spelling of 6710722021 in words is "six billion, seven hundred ten million, seven hundred twenty-two thousand, twenty-one".