6996665 has 8 divisors (see below), whose sum is σ = 9041928. Its totient is φ = 5166720.

The previous prime is 6996653. The next prime is 6996679. The reversal of 6996665 is 5666996.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5929 + 6990736 = 77^2 + 2644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6996665 - 2¹² = 6992569 is a prime.

It is a super-2 number, since 2×6996665² = 97906642244450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53756 + ... + 53885.

It is an arithmetic number, because the mean of its divisors is an integer number (1130241).

Almost surely, 2^6996665 is an apocalyptic number.

6996665 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6996665 is a deficient number, since it is larger than the sum of its proper divisors (2045263).

6996665 is a wasteful number, since it uses less digits than its factorization.

6996665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107659.

The product of its digits is 524880, while the sum is 47.

The square root of 6996665 is about 2645.1209802200. The cubic root of 6996665 is about 191.2627342824.

The spelling of 6996665 in words is "six million, nine hundred ninety-six thousand, six hundred sixty-five".