6520038487 has 2 divisors, whose sum is σ = 6520038488. Its totient is φ = 6520038486.

The previous prime is 6520038479. The next prime is 6520038521. The reversal of 6520038487 is 7848300256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6520038487 - 2³ = 6520038479 is a prime.

It is a super-2 number, since 2×6520038487² = 85021803743922498338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520030487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260019243 + 3260019244.

It is an arithmetic number, because the mean of its divisors is an integer number (3260019244).

Almost surely, 2^6520038487 is an apocalyptic number.

6520038487 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520038487 is an equidigital number, since it uses as much as digits as its factorization.

6520038487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 6520038487 is about 80746.7552722708. The cubic root of 6520038487 is about 1868.1714027258.

The spelling of 6520038487 in words is "six billion, five hundred twenty million, thirty-eight thousand, four hundred eighty-seven".