6970640 has 20 divisors (see below), whose sum is σ = 16206924. Its totient is φ = 2788224.

The previous prime is 6970637. The next prime is 6970681. The reversal of 6970640 is 460796.

6970640 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 3701776 = 1808^2 + 1924^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 6970597 and 6970606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43487 + ... + 43646.

Almost surely, 2^6970640 is an apocalyptic number.

It is an amenable number.

6970640 is an abundant number, since it is smaller than the sum of its proper divisors (9236284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6970640 is a wasteful number, since it uses less digits than its factorization.

6970640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87146 (or 87140 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 6970640 is about 2640.1969623496. The cubic root of 6970640 is about 191.0252974908.

The spelling of 6970640 in words is "six million, nine hundred seventy thousand, six hundred forty".