63969197 has 2 divisors, whose sum is σ = 63969198. Its totient is φ = 63969196.

The previous prime is 63969173. The next prime is 63969211. The reversal of 63969197 is 79196936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53085796 + 10883401 = 7286^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 63969197 - 2¹⁴ = 63952813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63969137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31984598 + 31984599.

It is an arithmetic number, because the mean of its divisors is an integer number (31984599).

Almost surely, 2^63969197 is an apocalyptic number.

It is an amenable number.

63969197 is a deficient number, since it is larger than the sum of its proper divisors (1).

63969197 is an equidigital number, since it uses as much as digits as its factorization.

63969197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 50.

The square root of 63969197 is about 7998.0745807976. The cubic root of 63969197 is about 399.9358167852.

The spelling of 63969197 in words is "sixty-three million, nine hundred sixty-nine thousand, one hundred ninety-seven".