612663109 has 2 divisors, whose sum is σ = 612663110. Its totient is φ = 612663108.

The previous prime is 612663083. The next prime is 612663127. The reversal of 612663109 is 901366216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426422500 + 186240609 = 20650^2 + 13647^2 .

It is a cyclic number.

It is not a de Polignac number, because 612663109 - 2¹⁵ = 612630341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612663169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306331554 + 306331555.

It is an arithmetic number, because the mean of its divisors is an integer number (306331555).

Almost surely, 2^612663109 is an apocalyptic number.

It is an amenable number.

612663109 is a deficient number, since it is larger than the sum of its proper divisors (1).

612663109 is an equidigital number, since it uses as much as digits as its factorization.

612663109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 612663109 is about 24752.0324216013. The cubic root of 612663109 is about 849.3250046042.

The spelling of 612663109 in words is "six hundred twelve million, six hundred sixty-three thousand, one hundred nine".