6701600665 has 4 divisors (see below), whose sum is σ = 8041920804. Its totient is φ = 5361280528.

The previous prime is 6701600663. The next prime is 6701600681. The reversal of 6701600665 is 5660061076.

It is a happy number.

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 4040382096 + 2661218569 = 63564^2 + 51587^2 .

It is a cyclic number.

It is not a de Polignac number, because 6701600665 - 2¹ = 6701600663 is a prime.

It is a super-2 number, since 2×6701600665² = 89822902946256884450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6701600663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670160062 + ... + 670160071.

It is an arithmetic number, because the mean of its divisors is an integer number (2010480201).

Almost surely, 2^6701600665 is an apocalyptic number.

It is an amenable number.

6701600665 is a deficient number, since it is larger than the sum of its proper divisors (1340320139).

6701600665 is a wasteful number, since it uses less digits than its factorization.

6701600665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340320138.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6701600665 is about 81863.3047524958. The cubic root of 6701600665 is about 1885.3537473989.

The spelling of 6701600665 in words is "six billion, seven hundred one million, six hundred thousand, six hundred sixty-five".