6702004021 has 4 divisors (see below), whose sum is σ = 6713156044. Its totient is φ = 6690852000.

The previous prime is 6702004013. The next prime is 6702004039. The reversal of 6702004021 is 1204002076.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6381772996 + 320231025 = 79886^2 + 17895^2 .

It is a cyclic number.

It is not a de Polignac number, because 6702004021 - 2³ = 6702004013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6702003983 and 6702004001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6702004091) 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, 5575110 + ... + 5576311.

It is an arithmetic number, because the mean of its divisors is an integer number (1678289011).

Almost surely, 2^6702004021 is an apocalyptic number.

It is an amenable number.

6702004021 is a deficient number, since it is larger than the sum of its proper divisors (11152023).

6702004021 is a wasteful number, since it uses less digits than its factorization.

6702004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152022.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 6702004021 is about 81865.7683100818. The cubic root of 6702004021 is about 1885.3915718694.

Adding to 6702004021 its reverse (1204002076), we get a palindrome (7906006097).

The spelling of 6702004021 in words is "six billion, seven hundred two million, four thousand, twenty-one".