612013081 has 2 divisors, whose sum is σ = 612013082. Its totient is φ = 612013080.

The previous prime is 612013057. The next prime is 612013097. The reversal of 612013081 is 180310216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578835481 + 33177600 = 24059^2 + 5760^2 .

It is a cyclic number.

It is not a de Polignac number, because 612013081 - 2⁷ = 612012953 is a prime.

It is a super-2 number, since 2×612013081² = 749120022630225122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (612013001) 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, 306006540 + 306006541.

It is an arithmetic number, because the mean of its divisors is an integer number (306006541).

Almost surely, 2^612013081 is an apocalyptic number.

It is an amenable number.

612013081 is a deficient number, since it is larger than the sum of its proper divisors (1).

612013081 is an equidigital number, since it uses as much as digits as its factorization.

612013081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 612013081 is about 24738.8981363358. The cubic root of 612013081 is about 849.0245238599.

Adding to 612013081 its reverse (180310216), we get a palindrome (792323297).

The spelling of 612013081 in words is "six hundred twelve million, thirteen thousand, eighty-one".