3861205667 has 8 divisors (see below), whose sum is σ = 4357473840. Its totient is φ = 3389145760.

The previous prime is 3861205643. The next prime is 3861205679. The reversal of 3861205667 is 7665021683.

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

It is not a de Polignac number, because 3861205667 - 2¹² = 3861201571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3861205687) 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, 6051728 + ... + 6052365.

It is an arithmetic number, because the mean of its divisors is an integer number (544684230).

Almost surely, 2^3861205667 is an apocalyptic number.

3861205667 is a deficient number, since it is larger than the sum of its proper divisors (496268173).

3861205667 is a wasteful number, since it uses less digits than its factorization.

3861205667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12104133.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 3861205667 is about 62138.6004589740. The cubic root of 3861205667 is about 1568.8243144808.

The spelling of 3861205667 in words is "three billion, eight hundred sixty-one million, two hundred five thousand, six hundred sixty-seven".