6709993 has 4 divisors (see below), whose sum is σ = 6733188. Its totient is φ = 6686800.

The previous prime is 6709979. The next prime is 6710009. The reversal of 6709993 is 3999076.

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 6487209 + 222784 = 2547^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 6709993 - 2⁵ = 6709961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6709973) 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, 11158 + ... + 11743.

It is an arithmetic number, because the mean of its divisors is an integer number (1683297).

Almost surely, 2^6709993 is an apocalyptic number.

It is an amenable number.

6709993 is a deficient number, since it is larger than the sum of its proper divisors (23195).

6709993 is a wasteful number, since it uses less digits than its factorization.

6709993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23194.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 6709993 is about 2590.3654182374. The cubic root of 6709993 is about 188.6140421152.

The spelling of 6709993 in words is "six million, seven hundred nine thousand, nine hundred ninety-three".