6685072239 has 4 divisors (see below), whose sum is σ = 8913429656. Its totient is φ = 4456714824.

The previous prime is 6685072211. The next prime is 6685072241. The reversal of 6685072239 is 9322705866.

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

It is not a de Polignac number, because 6685072239 - 2⁷ = 6685072111 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 (6685072279) 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, 1114178704 + ... + 1114178709.

It is an arithmetic number, because the mean of its divisors is an integer number (2228357414).

Almost surely, 2^6685072239 is an apocalyptic number.

6685072239 is a deficient number, since it is larger than the sum of its proper divisors (2228357417).

6685072239 is a wasteful number, since it uses less digits than its factorization.

6685072239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228357416.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 6685072239 is about 81762.2910576752. The cubic root of 6685072239 is about 1883.8024969214.

The spelling of 6685072239 in words is "six billion, six hundred eighty-five million, seventy-two thousand, two hundred thirty-nine".