66584051 has 2 divisors, whose sum is σ = 66584052. Its totient is φ = 66584050.

The previous prime is 66584047. The next prime is 66584083. The reversal of 66584051 is 15048566.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66584051 - 2² = 66584047 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (66584951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33292025 + 33292026.

It is an arithmetic number, because the mean of its divisors is an integer number (33292026).

Almost surely, 2^66584051 is an apocalyptic number.

66584051 is a deficient number, since it is larger than the sum of its proper divisors (1).

66584051 is an equidigital number, since it uses as much as digits as its factorization.

66584051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 66584051 is about 8159.9050852323. The cubic root of 66584051 is about 405.3125687444.

The spelling of 66584051 in words is "sixty-six million, five hundred eighty-four thousand, fifty-one".