247085653 has 2 divisors, whose sum is σ = 247085654. Its totient is φ = 247085652.

The previous prime is 247085623. The next prime is 247085677. The reversal of 247085653 is 356580742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245172964 + 1912689 = 15658^2 + 1383^2 .

It is a cyclic number.

It is not a de Polignac number, because 247085653 - 2⁹ = 247085141 is a prime.

It is a super-2 number, since 2×247085653² = 122102639836872818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247085603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123542826 + 123542827.

It is an arithmetic number, because the mean of its divisors is an integer number (123542827).

Almost surely, 2^247085653 is an apocalyptic number.

It is an amenable number.

247085653 is a deficient number, since it is larger than the sum of its proper divisors (1).

247085653 is an equidigital number, since it uses as much as digits as its factorization.

247085653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 247085653 is about 15718.9583942448. The cubic root of 247085653 is about 627.5030527409.

The spelling of 247085653 in words is "two hundred forty-seven million, eighty-five thousand, six hundred fifty-three".