63365573 has 2 divisors, whose sum is σ = 63365574. Its totient is φ = 63365572.

The previous prime is 63365569. The next prime is 63365593. The reversal of 63365573 is 37556336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35307364 + 28058209 = 5942^2 + 5297^2 .

It is a cyclic number.

It is not a de Polignac number, because 63365573 - 2² = 63365569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63365503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31682786 + 31682787.

It is an arithmetic number, because the mean of its divisors is an integer number (31682787).

Almost surely, 2^63365573 is an apocalyptic number.

It is an amenable number.

63365573 is a deficient number, since it is larger than the sum of its proper divisors (1).

63365573 is an equidigital number, since it uses as much as digits as its factorization.

63365573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 38.

The square root of 63365573 is about 7960.2495563895. The cubic root of 63365573 is about 398.6738854926.

The spelling of 63365573 in words is "sixty-three million, three hundred sixty-five thousand, five hundred seventy-three".