6870177989 has 4 divisors (see below), whose sum is σ = 7274306124. Its totient is φ = 6466049856.

The previous prime is 6870177931. The next prime is 6870178001. The reversal of 6870177989 is 9897710786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9897710786 = 2 ⋅4948855393.

It can be written as a sum of positive squares in 2 ways, for example, as 4702530625 + 2167647364 = 68575^2 + 46558^2 .

It is a cyclic number.

It is not a de Polignac number, because 6870177989 - 2²⁸ = 6601742533 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 (6870177929) 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, 202064042 + ... + 202064075.

It is an arithmetic number, because the mean of its divisors is an integer number (1818576531).

Almost surely, 2^6870177989 is an apocalyptic number.

It is an amenable number.

6870177989 is a deficient number, since it is larger than the sum of its proper divisors (404128135).

6870177989 is a wasteful number, since it uses less digits than its factorization.

6870177989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404128134.

The product of its (nonzero) digits is 10668672, while the sum is 62.

The square root of 6870177989 is about 82886.5368380173. The cubic root of 6870177989 is about 1901.0315717731.

The spelling of 6870177989 in words is "six billion, eight hundred seventy million, one hundred seventy-seven thousand, nine hundred eighty-nine".