47206681 has 2 divisors, whose sum is σ = 47206682. Its totient is φ = 47206680.

The previous prime is 47206673. The next prime is 47206717. The reversal of 47206681 is 18660274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 16736281 = 5520^2 + 4091^2 .

It is a cyclic number.

It is not a de Polignac number, because 47206681 - 2³ = 47206673 is a prime.

It is a super-2 number, since 2×47206681² = 4456941462071522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47206661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23603340 + 23603341.

It is an arithmetic number, because the mean of its divisors is an integer number (23603341).

Almost surely, 2^47206681 is an apocalyptic number.

It is an amenable number.

47206681 is a deficient number, since it is larger than the sum of its proper divisors (1).

47206681 is an equidigital number, since it uses as much as digits as its factorization.

47206681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 47206681 is about 6870.7118262957. The cubic root of 47206681 is about 361.4108244143.

The spelling of 47206681 in words is "forty-seven million, two hundred six thousand, six hundred eighty-one".