612261823 has 2 divisors, whose sum is σ = 612261824. Its totient is φ = 612261822.

The previous prime is 612261787. The next prime is 612261827. The reversal of 612261823 is 328162216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612261823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612261827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306130911 + 306130912.

It is an arithmetic number, because the mean of its divisors is an integer number (306130912).

Almost surely, 2^612261823 is an apocalyptic number.

612261823 is a deficient number, since it is larger than the sum of its proper divisors (1).

612261823 is an equidigital number, since it uses as much as digits as its factorization.

612261823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 612261823 is about 24743.9249715966. The cubic root of 612261823 is about 849.1395319972.

The spelling of 612261823 in words is "six hundred twelve million, two hundred sixty-one thousand, eight hundred twenty-three".