6708957139 has 4 divisors (see below), whose sum is σ = 6709640224. Its totient is φ = 6708274056.

The previous prime is 6708957131. The next prime is 6708957187. The reversal of 6708957139 is 9317598076.

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 6708957139 - 2³ = 6708957131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6708957139.

It is not an unprimeable number, because it can be changed into a prime (6708957131) 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, 326592 + ... + 346525.

It is an arithmetic number, because the mean of its divisors is an integer number (1677410056).

Almost surely, 2^6708957139 is an apocalyptic number.

6708957139 is a deficient number, since it is larger than the sum of its proper divisors (683085).

6708957139 is an equidigital number, since it uses as much as digits as its factorization.

6708957139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683084.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 6708957139 is about 81908.2238789244. The cubic root of 6708957139 is about 1886.0433579687.

The spelling of 6708957139 in words is "six billion, seven hundred eight million, nine hundred fifty-seven thousand, one hundred thirty-nine".