612539089 has 2 divisors, whose sum is σ = 612539090. Its totient is φ = 612539088.

The previous prime is 612539077. The next prime is 612539099. The reversal of 612539089 is 980935216.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420578064 + 191961025 = 20508^2 + 13855^2 .

It is a cyclic number.

It is not a de Polignac number, because 612539089 - 2¹⁹ = 612014801 is a prime.

It is not a weakly prime, because it can be changed into another prime (612539009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306269544 + 306269545.

It is an arithmetic number, because the mean of its divisors is an integer number (306269545).

Almost surely, 2^612539089 is an apocalyptic number.

It is an amenable number.

612539089 is a deficient number, since it is larger than the sum of its proper divisors (1).

612539089 is an equidigital number, since it uses as much as digits as its factorization.

612539089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 612539089 is about 24749.5270459862. The cubic root of 612539089 is about 849.2676917603.

The spelling of 612539089 in words is "six hundred twelve million, five hundred thirty-nine thousand, eighty-nine".