613663847 has 2 divisors, whose sum is σ = 613663848. Its totient is φ = 613663846.

The previous prime is 613663823. The next prime is 613663891. The reversal of 613663847 is 748366316.

It is an a-pointer prime, because the next prime (613663891) can be obtained adding 613663847 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613663847 - 2¹⁶ = 613598311 is a prime.

It is a super-2 number, since 2×613663847² = 753166634229678818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 613663798 and 613663807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613663247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306831923 + 306831924.

It is an arithmetic number, because the mean of its divisors is an integer number (306831924).

Almost surely, 2^613663847 is an apocalyptic number.

613663847 is a deficient number, since it is larger than the sum of its proper divisors (1).

613663847 is an equidigital number, since it uses as much as digits as its factorization.

613663847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 613663847 is about 24772.2394425696. The cubic root of 613663847 is about 849.7871887075.

The spelling of 613663847 in words is "six hundred thirteen million, six hundred sixty-three thousand, eight hundred forty-seven".