7687704061 has 4 divisors (see below), whose sum is σ = 7688449692. Its totient is φ = 7686958432.

The previous prime is 7687704049. The next prime is 7687704083. The reversal of 7687704061 is 1604077867.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6163192036 + 1524512025 = 78506^2 + 39045^2 .

It is a cyclic number.

It is not a de Polignac number, because 7687704061 - 2¹¹ = 7687702013 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 (7687704041) 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, 357130 + ... + 378043.

It is an arithmetic number, because the mean of its divisors is an integer number (1922112423).

Almost surely, 2^7687704061 is an apocalyptic number.

It is an amenable number.

7687704061 is a deficient number, since it is larger than the sum of its proper divisors (745631).

7687704061 is a wasteful number, since it uses less digits than its factorization.

7687704061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745630.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 7687704061 is about 87679.5532664258. The cubic root of 7687704061 is about 1973.6291559461.

The spelling of 7687704061 in words is "seven billion, six hundred eighty-seven million, seven hundred four thousand, sixty-one".