612167197 has 2 divisors, whose sum is σ = 612167198. Its totient is φ = 612167196.

The previous prime is 612167189. The next prime is 612167203. The reversal of 612167197 is 791761216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 446941881 + 165225316 = 21141^2 + 12854^2 .

It is a cyclic number.

It is not a de Polignac number, because 612167197 - 2³ = 612167189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612167107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306083598 + 306083599.

It is an arithmetic number, because the mean of its divisors is an integer number (306083599).

Almost surely, 2^612167197 is an apocalyptic number.

It is an amenable number.

612167197 is a deficient number, since it is larger than the sum of its proper divisors (1).

612167197 is an equidigital number, since it uses as much as digits as its factorization.

612167197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 40.

The square root of 612167197 is about 24742.0127920103. The cubic root of 612167197 is about 849.0957844728.

The spelling of 612167197 in words is "six hundred twelve million, one hundred sixty-seven thousand, one hundred ninety-seven".