612644983 has 2 divisors, whose sum is σ = 612644984. Its totient is φ = 612644982.

The previous prime is 612644897. The next prime is 612645017. The reversal of 612644983 is 389446216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612644983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612641983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306322491 + 306322492.

It is an arithmetic number, because the mean of its divisors is an integer number (306322492).

Almost surely, 2^612644983 is an apocalyptic number.

612644983 is a deficient number, since it is larger than the sum of its proper divisors (1).

612644983 is an equidigital number, since it uses as much as digits as its factorization.

612644983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 612644983 is about 24751.6662671425. Note that the first 3 decimals coincide. The cubic root of 612644983 is about 849.3166285943.

The spelling of 612644983 in words is "six hundred twelve million, six hundred forty-four thousand, nine hundred eighty-three".