6520670783 has 8 divisors (see below), whose sum is σ = 7147174656. Its totient is φ = 5899786200.

The previous prime is 6520670777. The next prime is 6520670809. The reversal of 6520670783 is 3870760256.

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

It is not a de Polignac number, because 6520670783 - 2¹⁰ = 6520669759 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 (6520670713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402391 + ... + 1407032.

It is an arithmetic number, because the mean of its divisors is an integer number (893396832).

Almost surely, 2^6520670783 is an apocalyptic number.

6520670783 is a deficient number, since it is larger than the sum of its proper divisors (626503873).

6520670783 is a wasteful number, since it uses less digits than its factorization.

6520670783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809645.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 6520670783 is about 80750.6704801886. The cubic root of 6520670783 is about 1868.2317908726.

The spelling of 6520670783 in words is "six billion, five hundred twenty million, six hundred seventy thousand, seven hundred eighty-three".