4085876661 has 4 divisors (see below), whose sum is σ = 5447835552. Its totient is φ = 2723917772.

The previous prime is 4085876621. The next prime is 4085876687. The reversal of 4085876661 is 1666785804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4085876661 - 2⁷ = 4085876533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085876621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680979441 + ... + 680979446.

It is an arithmetic number, because the mean of its divisors is an integer number (1361958888).

Almost surely, 2^4085876661 is an apocalyptic number.

It is an amenable number.

4085876661 is a deficient number, since it is larger than the sum of its proper divisors (1361958891).

4085876661 is a wasteful number, since it uses less digits than its factorization.

4085876661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361958890.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 4085876661 is about 63920.8624863589. The cubic root of 4085876661 is about 1598.6807694692.

The spelling of 4085876661 in words is "four billion, eighty-five million, eight hundred seventy-six thousand, six hundred sixty-one".