3661812727 has 8 divisors (see below), whose sum is σ = 3821710464. Its totient is φ = 3501972408.

The previous prime is 3661812719. The next prime is 3661812809. The reversal of 3661812727 is 7272181663.

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 3661812727 - 2³ = 3661812719 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 (3661812227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162448 + ... + 183610.

It is an arithmetic number, because the mean of its divisors is an integer number (477713808).

Almost surely, 2^3661812727 is an apocalyptic number.

3661812727 is a deficient number, since it is larger than the sum of its proper divisors (159897737).

3661812727 is a wasteful number, since it uses less digits than its factorization.

3661812727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28709.

The product of its digits is 169344, while the sum is 43.

The square root of 3661812727 is about 60512.9137209571. The cubic root of 3661812727 is about 1541.3409255991.

The spelling of 3661812727 in words is "three billion, six hundred sixty-one million, eight hundred twelve thousand, seven hundred twenty-seven".