2012677661 has 2 divisors, whose sum is σ = 2012677662. Its totient is φ = 2012677660.

The previous prime is 2012677631. The next prime is 2012677673. The reversal of 2012677661 is 1667762102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2006502436 + 6175225 = 44794^2 + 2485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012677661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012677621) 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 as a sum of consecutive naturals, namely, 1006338830 + 1006338831.

It is an arithmetic number, because the mean of its divisors is an integer number (1006338831).

Almost surely, 2^2012677661 is an apocalyptic number.

It is an amenable number.

2012677661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012677661 is an equidigital number, since it uses as much as digits as its factorization.

2012677661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 2012677661 is about 44862.8762007074. The cubic root of 2012677661 is about 1262.5775866575.

The spelling of 2012677661 in words is "two billion, twelve million, six hundred seventy-seven thousand, six hundred sixty-one".