247281673 has 2 divisors, whose sum is σ = 247281674. Its totient is φ = 247281672.

The previous prime is 247281659. The next prime is 247281703. The reversal of 247281673 is 376182742.

247281673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173527929 + 73753744 = 13173^2 + 8588^2 .

It is a cyclic number.

It is not a de Polignac number, because 247281673 - 2⁵ = 247281641 is a prime.

It is a super-2 number, since 2×247281673² = 122296451603357858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247281653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123640836 + 123640837.

It is an arithmetic number, because the mean of its divisors is an integer number (123640837).

Almost surely, 2^247281673 is an apocalyptic number.

It is an amenable number.

247281673 is a deficient number, since it is larger than the sum of its proper divisors (1).

247281673 is an equidigital number, since it uses as much as digits as its factorization.

247281673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 247281673 is about 15725.1923040706. The cubic root of 247281673 is about 627.6689474876.

The spelling of 247281673 in words is "two hundred forty-seven million, two hundred eighty-one thousand, six hundred seventy-three".