6506761531 has 2 divisors, whose sum is σ = 6506761532. Its totient is φ = 6506761530.

The previous prime is 6506761477. The next prime is 6506761601. The reversal of 6506761531 is 1351676056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6506761531 - 2⁷ = 6506761403 is a prime.

It is a super-2 number, since 2×6506761531² = 84675891242602927922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6506761031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3253380765 + 3253380766.

It is an arithmetic number, because the mean of its divisors is an integer number (3253380766).

Almost surely, 2^6506761531 is an apocalyptic number.

6506761531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6506761531 is an equidigital number, since it uses as much as digits as its factorization.

6506761531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 6506761531 is about 80664.4998186935. The cubic root of 6506761531 is about 1866.9024692797.

The spelling of 6506761531 in words is "six billion, five hundred six million, seven hundred sixty-one thousand, five hundred thirty-one".