64229197 has 2 divisors, whose sum is σ = 64229198. Its totient is φ = 64229196.

The previous prime is 64229189. The next prime is 64229203. The reversal of 64229197 is 79192246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54375876 + 9853321 = 7374^2 + 3139^2 .

It is a cyclic number.

It is not a de Polignac number, because 64229197 - 2³ = 64229189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64229497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32114598 + 32114599.

It is an arithmetic number, because the mean of its divisors is an integer number (32114599).

Almost surely, 2^64229197 is an apocalyptic number.

It is an amenable number.

64229197 is a deficient number, since it is larger than the sum of its proper divisors (1).

64229197 is an equidigital number, since it uses as much as digits as its factorization.

64229197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 64229197 is about 8014.3120103974. The cubic root of 64229197 is about 400.4769248806.

The spelling of 64229197 in words is "sixty-four million, two hundred twenty-nine thousand, one hundred ninety-seven".