612753949 has 2 divisors, whose sum is σ = 612753950. Its totient is φ = 612753948.

The previous prime is 612753937. The next prime is 612753989. The reversal of 612753949 is 949357216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368832025 + 243921924 = 19205^2 + 15618^2 .

It is a cyclic number.

It is not a de Polignac number, because 612753949 - 2⁷ = 612753821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612753899 and 612753908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612753989) 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, 306376974 + 306376975.

It is an arithmetic number, because the mean of its divisors is an integer number (306376975).

Almost surely, 2^612753949 is an apocalyptic number.

It is an amenable number.

612753949 is a deficient number, since it is larger than the sum of its proper divisors (1).

612753949 is an equidigital number, since it uses as much as digits as its factorization.

612753949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 612753949 is about 24753.8673544156. The cubic root of 612753949 is about 849.3669792063.

The spelling of 612753949 in words is "six hundred twelve million, seven hundred fifty-three thousand, nine hundred forty-nine".