7706641631 has 16 divisors (see below), whose sum is σ = 8407435680. Its totient is φ = 7021555200.

The previous prime is 7706641531. The next prime is 7706641667. The reversal of 7706641631 is 1361466077.

It is a cyclic number.

It is not a de Polignac number, because 7706641631 - 2¹⁰ = 7706640607 is a prime.

It is a super-2 number, since 2×7706641631² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7706641531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689816 + ... + 700898.

It is an arithmetic number, because the mean of its divisors is an integer number (525464730).

Almost surely, 2^7706641631 is an apocalyptic number.

7706641631 is a deficient number, since it is larger than the sum of its proper divisors (700794049).

7706641631 is a wasteful number, since it uses less digits than its factorization.

7706641631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11786.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 7706641631 is about 87787.4799216836. The cubic root of 7706641631 is about 1975.2484123579.

The spelling of 7706641631 in words is "seven billion, seven hundred six million, six hundred forty-one thousand, six hundred thirty-one".