7871660407 has 8 divisors (see below), whose sum is σ = 8620854480. Its totient is φ = 7142992320.

The previous prime is 7871660387. The next prime is 7871660413. The reversal of 7871660407 is 7040661787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7871660407 - 2¹⁵ = 7871627639 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 (7871660417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5130694 + ... + 5132227.

It is an arithmetic number, because the mean of its divisors is an integer number (1077606810).

Almost surely, 2^7871660407 is an apocalyptic number.

7871660407 is a deficient number, since it is larger than the sum of its proper divisors (749194073).

7871660407 is a wasteful number, since it uses less digits than its factorization.

7871660407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262993.

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

The square root of 7871660407 is about 88722.3782762838. The cubic root of 7871660407 is about 1989.2473275361.

The spelling of 7871660407 in words is "seven billion, eight hundred seventy-one million, six hundred sixty thousand, four hundred seven".