11761961 has 2 divisors, whose sum is σ = 11761962. Its totient is φ = 11761960.

The previous prime is 11761951. The next prime is 11761987. The reversal of 11761961 is 16916711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11424400 + 337561 = 3380^2 + 581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11761961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11761951) 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 as a sum of consecutive naturals, namely, 5880980 + 5880981.

It is an arithmetic number, because the mean of its divisors is an integer number (5880981).

Almost surely, 2^11761961 is an apocalyptic number.

It is an amenable number.

11761961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11761961 is an equidigital number, since it uses as much as digits as its factorization.

11761961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 32.

The square root of 11761961 is about 3429.5715475843. The cubic root of 11761961 is about 227.4189124532.

The spelling of 11761961 in words is "eleven million, seven hundred sixty-one thousand, nine hundred sixty-one".