247605427 has 2 divisors, whose sum is σ = 247605428. Its totient is φ = 247605426.

The previous prime is 247605409. The next prime is 247605467. The reversal of 247605427 is 724506742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247605427 - 2²⁷ = 113387699 is a prime.

It is a super-2 number, since 2×247605427² = 122616894959704658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247605467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123802713 + 123802714.

It is an arithmetic number, because the mean of its divisors is an integer number (123802714).

Almost surely, 2^247605427 is an apocalyptic number.

247605427 is a deficient number, since it is larger than the sum of its proper divisors (1).

247605427 is an equidigital number, since it uses as much as digits as its factorization.

247605427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 247605427 is about 15735.4830558201. The cubic root of 247605427 is about 627.9427536158.

The spelling of 247605427 in words is "two hundred forty-seven million, six hundred five thousand, four hundred twenty-seven".