6705658489 has 4 divisors (see below), whose sum is σ = 6706882980. Its totient is φ = 6704434000.

The previous prime is 6705658457. The next prime is 6705658499. The reversal of 6705658489 is 9848565076.

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 5667530089 + 1038128400 = 75283^2 + 32220^2 .

It is a cyclic number.

It is not a de Polignac number, because 6705658489 - 2⁵ = 6705658457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6705658409) 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, 603994 + ... + 614995.

It is an arithmetic number, because the mean of its divisors is an integer number (1676720745).

Almost surely, 2^6705658489 is an apocalyptic number.

It is an amenable number.

6705658489 is a deficient number, since it is larger than the sum of its proper divisors (1224491).

6705658489 is a wasteful number, since it uses less digits than its factorization.

6705658489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224490.

The product of its (nonzero) digits is 14515200, while the sum is 58.

The square root of 6705658489 is about 81888.0851467416. The cubic root of 6705658489 is about 1885.7341983027.

The spelling of 6705658489 in words is "six billion, seven hundred five million, six hundred fifty-eight thousand, four hundred eighty-nine".