7661676571 has 4 divisors (see below), whose sum is σ = 7661990392. Its totient is φ = 7661362752.

The previous prime is 7661676563. The next prime is 7661676623. The reversal of 7661676571 is 1756761667.

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 7661676571 - 2³ = 7661676563 is a prime.

It is a super-2 number, since 2×7661676571² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7661676521) 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, 116886 + ... + 170251.

It is an arithmetic number, because the mean of its divisors is an integer number (1915497598).

Almost surely, 2^7661676571 is an apocalyptic number.

7661676571 is a deficient number, since it is larger than the sum of its proper divisors (313821).

7661676571 is a wasteful number, since it uses less digits than its factorization.

7661676571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313820.

The product of its digits is 2222640, while the sum is 52.

The square root of 7661676571 is about 87531.0034844797. The cubic root of 7661676571 is about 1971.3993314026.

The spelling of 7661676571 in words is "seven billion, six hundred sixty-one million, six hundred seventy-six thousand, five hundred seventy-one".