247670539 has 2 divisors, whose sum is σ = 247670540. Its totient is φ = 247670538.

The previous prime is 247670503. The next prime is 247670557. The reversal of 247670539 is 935076742.

247670539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247670539 - 2²⁵ = 214116107 is a prime.

It is a super-2 number, since 2×247670539² = 122681391777101042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247670495 and 247670504.

It is not a weakly prime, because it can be changed into another prime (247670039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123835269 + 123835270.

It is an arithmetic number, because the mean of its divisors is an integer number (123835270).

Almost surely, 2^247670539 is an apocalyptic number.

247670539 is a deficient number, since it is larger than the sum of its proper divisors (1).

247670539 is an equidigital number, since it uses as much as digits as its factorization.

247670539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 247670539 is about 15737.5518744181. The cubic root of 247670539 is about 627.9977914848.

The spelling of 247670539 in words is "two hundred forty-seven million, six hundred seventy thousand, five hundred thirty-nine".