6698005 has 4 divisors (see below), whose sum is σ = 8037612. Its totient is φ = 5358400.

The previous prime is 6697979. The next prime is 6698009. The reversal of 6698005 is 5008966.

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 2669956 + 4028049 = 1634^2 + 2007^2 .

It is not a de Polignac number, because 6698005 - 2⁵ = 6697973 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 (6698009) 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, 669796 + ... + 669805.

It is an arithmetic number, because the mean of its divisors is an integer number (2009403).

Almost surely, 2^6698005 is an apocalyptic number.

It is an amenable number.

6698005 is a deficient number, since it is larger than the sum of its proper divisors (1339607).

6698005 is a wasteful number, since it uses less digits than its factorization.

6698005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339606.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 6698005 is about 2588.0504245474. The cubic root of 6698005 is about 188.5016498951.

The spelling of 6698005 in words is "six million, six hundred ninety-eight thousand, five".