6631007461 has 4 divisors (see below), whose sum is σ = 7141084972. Its totient is φ = 6120929952.

The previous prime is 6631007459. The next prime is 6631007483. The reversal of 6631007461 is 1647001366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1647001366 = 2 ⋅823500683.

It can be written as a sum of positive squares in 2 ways, for example, as 4449557025 + 2181450436 = 66705^2 + 46706^2 .

It is a cyclic number.

It is not a de Polignac number, because 6631007461 - 2¹ = 6631007459 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 (6631007861) 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, 255038736 + ... + 255038761.

It is an arithmetic number, because the mean of its divisors is an integer number (1785271243).

Almost surely, 2^6631007461 is an apocalyptic number.

It is an amenable number.

6631007461 is a deficient number, since it is larger than the sum of its proper divisors (510077511).

6631007461 is a wasteful number, since it uses less digits than its factorization.

6631007461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510077510.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6631007461 is about 81430.9981579497. The cubic root of 6631007461 is about 1878.7103971819.

The spelling of 6631007461 in words is "six billion, six hundred thirty-one million, seven thousand, four hundred sixty-one".