6920063440 has 20 divisors (see below), whose sum is σ = 16089147684. Its totient is φ = 2768025344.

The previous prime is 6920063413. The next prime is 6920063483. The reversal of 6920063440 is 443600296.

It can be written as a sum of positive squares in 2 ways, for example, as 1242139536 + 5677923904 = 35244^2 + 75352^2 .

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 = 6920063396 and 6920063405.

It is a congruent number.

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, 43250317 + ... + 43250476.

Almost surely, 2^6920063440 is an apocalyptic number.

It is an amenable number.

6920063440 is an abundant number, since it is smaller than the sum of its proper divisors (9169084244).

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

6920063440 is a wasteful number, since it uses less digits than its factorization.

6920063440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86500806 (or 86500800 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 6920063440 is about 83186.9186831680. The cubic root of 6920063440 is about 1905.6217102185.

The spelling of 6920063440 in words is "six billion, nine hundred twenty million, sixty-three thousand, four hundred forty".