6520747 has 2 divisors, whose sum is σ = 6520748. Its totient is φ = 6520746.

The previous prime is 6520727. The next prime is 6520771. The reversal of 6520747 is 7470256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6520747 - 2¹⁵ = 6487979 is a prime.

It is equal to p₄₄₆₀₈₉ and since 6520747 and 446089 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6520727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260373 + 3260374.

It is an arithmetic number, because the mean of its divisors is an integer number (3260374).

Almost surely, 2^6520747 is an apocalyptic number.

6520747 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520747 is an equidigital number, since it uses as much as digits as its factorization.

6520747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 6520747 is about 2553.5753366603. The cubic root of 6520747 is about 186.8239069800.

The spelling of 6520747 in words is "six million, five hundred twenty thousand, seven hundred forty-seven".