4087750661 has 4 divisors (see below), whose sum is σ = 4104712524. Its totient is φ = 4070788800.

The previous prime is 4087750637. The next prime is 4087750673. The reversal of 4087750661 is 1660577804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2144616100 + 1943134561 = 46310^2 + 44081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4087750661 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 (4087750621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8480570 + ... + 8481051.

It is an arithmetic number, because the mean of its divisors is an integer number (1026178131).

Almost surely, 2^4087750661 is an apocalyptic number.

It is an amenable number.

4087750661 is a deficient number, since it is larger than the sum of its proper divisors (16961863).

4087750661 is a wasteful number, since it uses less digits than its factorization.

4087750661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16961862.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 4087750661 is about 63935.5195568160. The cubic root of 4087750661 is about 1598.9251454092.

The spelling of 4087750661 in words is "four billion, eighty-seven million, seven hundred fifty thousand, six hundred sixty-one".