995755661 has 4 divisors (see below), whose sum is σ = 1004567772. Its totient is φ = 986943552.

The previous prime is 995755639. The next prime is 995755727. The reversal of 995755661 is 166557599.

995755661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166557599 = 13 ⋅12812123.

It can be written as a sum of positive squares in 2 ways, for example, as 19193161 + 976562500 = 4381^2 + 31250^2 .

It is a cyclic number.

It is not a de Polignac number, because 995755661 - 2²² = 991561357 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 (995755961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4405886 + ... + 4406111.

It is an arithmetic number, because the mean of its divisors is an integer number (251141943).

Almost surely, 2^995755661 is an apocalyptic number.

It is an amenable number.

995755661 is a deficient number, since it is larger than the sum of its proper divisors (8812111).

995755661 is a wasteful number, since it uses less digits than its factorization.

995755661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812110.

The product of its digits is 2551500, while the sum is 53.

The square root of 995755661 is about 31555.5963499345. The cubic root of 995755661 is about 998.5832139987.

The spelling of 995755661 in words is "nine hundred ninety-five million, seven hundred fifty-five thousand, six hundred sixty-one".