3678992661 has 8 divisors (see below), whose sum is σ = 5193872064. Its totient is φ = 2308387520.

The previous prime is 3678992659. The next prime is 3678992701. The reversal of 3678992661 is 1662998763.

It is a happy number.

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 3678992661 - 2¹ = 3678992659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678992651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36068505 + ... + 36068606.

It is an arithmetic number, because the mean of its divisors is an integer number (649234008).

Almost surely, 2^3678992661 is an apocalyptic number.

It is an amenable number.

3678992661 is a deficient number, since it is larger than the sum of its proper divisors (1514879403).

3678992661 is a wasteful number, since it uses less digits than its factorization.

3678992661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72137131.

The product of its digits is 5878656, while the sum is 57.

The square root of 3678992661 is about 60654.7002383162. The cubic root of 3678992661 is about 1543.7476417192.

The spelling of 3678992661 in words is "three billion, six hundred seventy-eight million, nine hundred ninety-two thousand, six hundred sixty-one".