47613661 has 2 divisors, whose sum is σ = 47613662. Its totient is φ = 47613660.

The previous prime is 47613641. The next prime is 47613667. The reversal of 47613661 is 16631674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 3802500 = 6619^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 47613661 - 2⁹ = 47613149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47613667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23806830 + 23806831.

It is an arithmetic number, because the mean of its divisors is an integer number (23806831).

Almost surely, 2^47613661 is an apocalyptic number.

It is an amenable number.

47613661 is a deficient number, since it is larger than the sum of its proper divisors (1).

47613661 is an equidigital number, since it uses as much as digits as its factorization.

47613661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 47613661 is about 6900.2652847554. The cubic root of 47613661 is about 362.4464567767.

The spelling of 47613661 in words is "forty-seven million, six hundred thirteen thousand, six hundred sixty-one".