6165640487 has 2 divisors, whose sum is σ = 6165640488. Its totient is φ = 6165640486.

The previous prime is 6165640469. The next prime is 6165640513. The reversal of 6165640487 is 7840465616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6165640487 - 2⁸ = 6165640231 is a prime.

It is a super-2 number, since 2×6165640487² = 76030245229867194338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6165640417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3082820243 + 3082820244.

It is an arithmetic number, because the mean of its divisors is an integer number (3082820244).

Almost surely, 2^6165640487 is an apocalyptic number.

6165640487 is a deficient number, since it is larger than the sum of its proper divisors (1).

6165640487 is an equidigital number, since it uses as much as digits as its factorization.

6165640487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 6165640487 is about 78521.5924889454. The cubic root of 6165640487 is about 1833.6906306338.

The spelling of 6165640487 in words is "six billion, one hundred sixty-five million, six hundred forty thousand, four hundred eighty-seven".