247282613 has 2 divisors, whose sum is σ = 247282614. Its totient is φ = 247282612.

The previous prime is 247282547. The next prime is 247282621. The reversal of 247282613 is 316282742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218359729 + 28922884 = 14777^2 + 5378^2 .

It is a cyclic number.

It is not a de Polignac number, because 247282613 - 2¹² = 247278517 is a prime.

It is a super-2 number, since 2×247282613² = 122297381384215538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247282213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123641306 + 123641307.

It is an arithmetic number, because the mean of its divisors is an integer number (123641307).

Almost surely, 2^247282613 is an apocalyptic number.

It is an amenable number.

247282613 is a deficient number, since it is larger than the sum of its proper divisors (1).

247282613 is an equidigital number, since it uses as much as digits as its factorization.

247282613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 247282613 is about 15725.2221923889. Note that the first 3 decimals coincide. The cubic root of 247282613 is about 627.6697428128.

The spelling of 247282613 in words is "two hundred forty-seven million, two hundred eighty-two thousand, six hundred thirteen".