6697839 has 4 divisors (see below), whose sum is σ = 8930456. Its totient is φ = 4465224.

The previous prime is 6697837. The next prime is 6697841. The reversal of 6697839 is 9387966.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6697837) and next prime (6697841).

It is not a de Polignac number, because 6697839 - 2¹ = 6697837 is a prime.

It is a super-2 number, since 2×6697839² = 89722094539842, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697837) 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, 1116304 + ... + 1116309.

It is an arithmetic number, because the mean of its divisors is an integer number (2232614).

Almost surely, 2^6697839 is an apocalyptic number.

6697839 is a deficient number, since it is larger than the sum of its proper divisors (2232617).

6697839 is a wasteful number, since it uses less digits than its factorization.

6697839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232616.

The product of its digits is 489888, while the sum is 48.

The square root of 6697839 is about 2588.0183538762. The cubic root of 6697839 is about 188.5000926388.

The spelling of 6697839 in words is "six million, six hundred ninety-seven thousand, eight hundred thirty-nine".