47068781 has 2 divisors, whose sum is σ = 47068782. Its totient is φ = 47068780.

The previous prime is 47068729. The next prime is 47068793. The reversal of 47068781 is 18786074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 17147881 = 5470^2 + 4141^2 .

It is a cyclic number.

It is not a de Polignac number, because 47068781 - 2¹⁸ = 46806637 is a prime.

It is a super-2 number, since 2×47068781² = 4430940289651922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47068481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23534390 + 23534391.

It is an arithmetic number, because the mean of its divisors is an integer number (23534391).

Almost surely, 2^47068781 is an apocalyptic number.

It is an amenable number.

47068781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47068781 is an equidigital number, since it uses as much as digits as its factorization.

47068781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 47068781 is about 6860.6691364618. The cubic root of 47068781 is about 361.0585638166.

The spelling of 47068781 in words is "forty-seven million, sixty-eight thousand, seven hundred eighty-one".