66315043 has 2 divisors, whose sum is σ = 66315044. Its totient is φ = 66315042.

The previous prime is 66315037. The next prime is 66315047. The reversal of 66315043 is 34051366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66315043 is a prime.

It is not a weakly prime, because it can be changed into another prime (66315047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33157521 + 33157522.

It is an arithmetic number, because the mean of its divisors is an integer number (33157522).

Almost surely, 2^66315043 is an apocalyptic number.

66315043 is a deficient number, since it is larger than the sum of its proper divisors (1).

66315043 is an equidigital number, since it uses as much as digits as its factorization.

66315043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 66315043 is about 8143.4048775681. The cubic root of 66315043 is about 404.7659939660.

The spelling of 66315043 in words is "sixty-six million, three hundred fifteen thousand, forty-three".