7631727631 has 4 divisors (see below), whose sum is σ = 8325521064. Its totient is φ = 6937934200.

The previous prime is 7631727583. The next prime is 7631727637. The reversal of 7631727631 is 1367271367.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7631727631 - 2⁹ = 7631727119 is a prime.

It is a super-3 number, since 3×7631727631³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7631727637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346896700 + ... + 346896721.

It is an arithmetic number, because the mean of its divisors is an integer number (2081380266).

Almost surely, 2^7631727631 is an apocalyptic number.

7631727631 is a deficient number, since it is larger than the sum of its proper divisors (693793433).

7631727631 is a wasteful number, since it uses less digits than its factorization.

7631727631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693793432.

The product of its digits is 222264, while the sum is 43.

The square root of 7631727631 is about 87359.7597924811. The cubic root of 7631727631 is about 1968.8272913423.

Adding to 7631727631 its reverse (1367271367), we get a palindrome (8998998998).

The spelling of 7631727631 in words is "seven billion, six hundred thirty-one million, seven hundred twenty-seven thousand, six hundred thirty-one".