7713621631 has 4 divisors (see below), whose sum is σ = 7715723112. Its totient is φ = 7711520152.

The previous prime is 7713621613. The next prime is 7713621647. The reversal of 7713621631 is 1361263177.

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 7713621631 - 2¹⁵ = 7713588863 is a prime.

It is a super-2 number, since 2×7713621631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7713621611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045225 + ... + 1052578.

It is an arithmetic number, because the mean of its divisors is an integer number (1928930778).

Almost surely, 2^7713621631 is an apocalyptic number.

7713621631 is a deficient number, since it is larger than the sum of its proper divisors (2101481).

7713621631 is a wasteful number, since it uses less digits than its factorization.

7713621631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101480.

The product of its digits is 31752, while the sum is 37.

The square root of 7713621631 is about 87827.2260235970. The cubic root of 7713621631 is about 1975.8445679965.

The spelling of 7713621631 in words is "seven billion, seven hundred thirteen million, six hundred twenty-one thousand, six hundred thirty-one".