63345973 has 2 divisors, whose sum is σ = 63345974. Its totient is φ = 63345972.

The previous prime is 63345959. The next prime is 63345983. The reversal of 63345973 is 37954336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62694724 + 651249 = 7918^2 + 807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63345973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63345983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31672986 + 31672987.

It is an arithmetic number, because the mean of its divisors is an integer number (31672987).

Almost surely, 2^63345973 is an apocalyptic number.

It is an amenable number.

63345973 is a deficient number, since it is larger than the sum of its proper divisors (1).

63345973 is an equidigital number, since it uses as much as digits as its factorization.

63345973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 40.

The square root of 63345973 is about 7959.0183439919. The cubic root of 63345973 is about 398.6327758196.

The spelling of 63345973 in words is "sixty-three million, three hundred forty-five thousand, nine hundred seventy-three".