612753481 has 2 divisors, whose sum is σ = 612753482. Its totient is φ = 612753480.

The previous prime is 612753469. The next prime is 612753497. The reversal of 612753481 is 184357216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537497856 + 75255625 = 23184^2 + 8675^2 .

It is a cyclic number.

It is not a de Polignac number, because 612753481 - 2⁷ = 612753353 is a prime.

It is a super-2 number, since 2×612753481² = 750933656955234722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612753481.

It is not a weakly prime, because it can be changed into another prime (612753431) 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, 306376740 + 306376741.

It is an arithmetic number, because the mean of its divisors is an integer number (306376741).

Almost surely, 2^612753481 is an apocalyptic number.

It is an amenable number.

612753481 is a deficient number, since it is larger than the sum of its proper divisors (1).

612753481 is an equidigital number, since it uses as much as digits as its factorization.

612753481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 612753481 is about 24753.8579013454. The cubic root of 612753481 is about 849.3667629673.

The spelling of 612753481 in words is "six hundred twelve million, seven hundred fifty-three thousand, four hundred eighty-one".