618024247 has 2 divisors, whose sum is σ = 618024248. Its totient is φ = 618024246.

The previous prime is 618024241. The next prime is 618024259. The reversal of 618024247 is 742420816.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618024247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618024241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309012123 + 309012124.

It is an arithmetic number, because the mean of its divisors is an integer number (309012124).

Almost surely, 2^618024247 is an apocalyptic number.

618024247 is a deficient number, since it is larger than the sum of its proper divisors (1).

618024247 is an equidigital number, since it uses as much as digits as its factorization.

618024247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 618024247 is about 24860.0934632193. The cubic root of 618024247 is about 851.7951665634.

It can be divided in two parts, 61802 and 4247, that added together give a square (66049 = 257²).

The spelling of 618024247 in words is "six hundred eighteen million, twenty-four thousand, two hundred forty-seven".