612398243 has 2 divisors, whose sum is σ = 612398244. Its totient is φ = 612398242.

The previous prime is 612398239. The next prime is 612398261. The reversal of 612398243 is 342893216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612398243 - 2² = 612398239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612398197 and 612398206.

It is not a weakly prime, because it can be changed into another prime (612391243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306199121 + 306199122.

It is an arithmetic number, because the mean of its divisors is an integer number (306199122).

Almost surely, 2^612398243 is an apocalyptic number.

612398243 is a deficient number, since it is larger than the sum of its proper divisors (1).

612398243 is an equidigital number, since it uses as much as digits as its factorization.

612398243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 612398243 is about 24746.6814542880. The cubic root of 612398243 is about 849.2025938051.

The spelling of 612398243 in words is "six hundred twelve million, three hundred ninety-eight thousand, two hundred forty-three".