3540776661 has 6 divisors (see below), whose sum is σ = 5114455190. Its totient is φ = 2360517768.

The previous prime is 3540776651. The next prime is 3540776669. The reversal of 3540776661 is 1666770453.

It can be written as a sum of positive squares in only one way, i.e., 2222651025 + 1318125636 = 47145^2 + 36306^2 .

It is not a de Polignac number, because 3540776661 - 2⁹ = 3540776149 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 (3540776669) 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 5 ways as a sum of consecutive naturals, for example, 196709806 + ... + 196709823.

Almost surely, 2^3540776661 is an apocalyptic number.

It is an amenable number.

3540776661 is a deficient number, since it is larger than the sum of its proper divisors (1573678529).

3540776661 is a wasteful number, since it uses less digits than its factorization.

3540776661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393419635 (or 393419632 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 3540776661 is about 59504.4255581045. The cubic root of 3540776661 is about 1524.1680186033.

The spelling of 3540776661 in words is "three billion, five hundred forty million, seven hundred seventy-six thousand, six hundred sixty-one".