66463073 has 2 divisors, whose sum is σ = 66463074. Its totient is φ = 66463072.

The previous prime is 66463057. The next prime is 66463127. The reversal of 66463073 is 37036466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57866449 + 8596624 = 7607^2 + 2932^2 .

It is a cyclic number.

It is not a de Polignac number, because 66463073 - 2⁴ = 66463057 is a prime.

It is not a weakly prime, because it can be changed into another prime (66463003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33231536 + 33231537.

It is an arithmetic number, because the mean of its divisors is an integer number (33231537).

Almost surely, 2^66463073 is an apocalyptic number.

It is an amenable number.

66463073 is a deficient number, since it is larger than the sum of its proper divisors (1).

66463073 is an equidigital number, since it uses as much as digits as its factorization.

66463073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 66463073 is about 8152.4887611085. The cubic root of 66463073 is about 405.0669462060.

The spelling of 66463073 in words is "sixty-six million, four hundred sixty-three thousand, seventy-three".