3866691761 has 8 divisors (see below), whose sum is σ = 3905518848. Its totient is φ = 3828006000.

The previous prime is 3866691733. The next prime is 3866691779. The reversal of 3866691761 is 1671966683.

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 3866691761 - 2¹⁴ = 3866675377 is a prime.

It is a super-2 number, since 2×3866691761² = 29902610349170562242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866696761) 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, 20096 + ... + 90206.

It is an arithmetic number, because the mean of its divisors is an integer number (488189856).

Almost surely, 2^3866691761 is an apocalyptic number.

It is an amenable number.

3866691761 is a deficient number, since it is larger than the sum of its proper divisors (38827087).

3866691761 is a wasteful number, since it uses less digits than its factorization.

3866691761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70663.

The product of its digits is 1959552, while the sum is 53.

The square root of 3866691761 is about 62182.7287998846. The cubic root of 3866691761 is about 1569.5669706531.

The spelling of 3866691761 in words is "three billion, eight hundred sixty-six million, six hundred ninety-one thousand, seven hundred sixty-one".