6631496761 has 2 divisors, whose sum is σ = 6631496762. Its totient is φ = 6631496760.

The previous prime is 6631496749. The next prime is 6631496801. The reversal of 6631496761 is 1676941366.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4258345536 + 2373151225 = 65256^2 + 48715^2 .

It is a cyclic number.

It is not a de Polignac number, because 6631496761 - 2¹³ = 6631488569 is a prime.

It is a super-2 number, since 2×6631496761² = 87953498582306982242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6631496701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315748380 + 3315748381.

It is an arithmetic number, because the mean of its divisors is an integer number (3315748381).

Almost surely, 2^6631496761 is an apocalyptic number.

It is an amenable number.

6631496761 is a deficient number, since it is larger than the sum of its proper divisors (1).

6631496761 is an equidigital number, since it uses as much as digits as its factorization.

6631496761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 49.

The square root of 6631496761 is about 81434.0024866763. The cubic root of 6631496761 is about 1878.7566058661.

The spelling of 6631496761 in words is "six billion, six hundred thirty-one million, four hundred ninety-six thousand, seven hundred sixty-one".