6631631701 has 4 divisors (see below), whose sum is σ = 6632099532. Its totient is φ = 6631163872.

The previous prime is 6631631681. The next prime is 6631631717. The reversal of 6631631701 is 1071361366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1071361366 = 2 ⋅535680683.

It can be written as a sum of positive squares in 2 ways, for example, as 613751076 + 6017880625 = 24774^2 + 77575^2 .

It is a cyclic number.

It is not a de Polignac number, because 6631631701 - 2²⁷ = 6497413973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631631761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211966 + ... + 241231.

It is an arithmetic number, because the mean of its divisors is an integer number (1658024883).

Almost surely, 2^6631631701 is an apocalyptic number.

It is an amenable number.

6631631701 is a deficient number, since it is larger than the sum of its proper divisors (467831).

6631631701 is a wasteful number, since it uses less digits than its factorization.

6631631701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467830.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 6631631701 is about 81434.8310061487. The cubic root of 6631631701 is about 1878.7693489770.

The spelling of 6631631701 in words is "six billion, six hundred thirty-one million, six hundred thirty-one thousand, seven hundred one".