6996637 has 4 divisors (see below), whose sum is σ = 7027420. Its totient is φ = 6965856.

The previous prime is 6996631. The next prime is 6996643. The reversal of 6996637 is 7366996.

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 (6996631) and next prime (6996643).

It can be written as a sum of positive squares in 2 ways, for example, as 4137156 + 2859481 = 2034^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 6996637 - 2³ = 6996629 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 (6996631) 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, 15048 + ... + 15505.

It is an arithmetic number, because the mean of its divisors is an integer number (1756855).

Almost surely, 2^6996637 is an apocalyptic number.

It is an amenable number.

6996637 is a deficient number, since it is larger than the sum of its proper divisors (30783).

6996637 is a wasteful number, since it uses less digits than its factorization.

6996637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30782.

The product of its digits is 367416, while the sum is 46.

The square root of 6996637 is about 2645.1156874511. The cubic root of 6996637 is about 191.2624791436.

The spelling of 6996637 in words is "six million, nine hundred ninety-six thousand, six hundred thirty-seven".