66472099 has 2 divisors, whose sum is σ = 66472100. Its totient is φ = 66472098.

The previous prime is 66472097. The next prime is 66472157. The reversal of 66472099 is 99027466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66472099 - 2¹ = 66472097 is a prime.

Together with 66472097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66472097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33236049 + 33236050.

It is an arithmetic number, because the mean of its divisors is an integer number (33236050).

Almost surely, 2^66472099 is an apocalyptic number.

66472099 is a deficient number, since it is larger than the sum of its proper divisors (1).

66472099 is an equidigital number, since it uses as much as digits as its factorization.

66472099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 66472099 is about 8153.0423156022. The cubic root of 66472099 is about 405.0852820457.

The spelling of 66472099 in words is "sixty-six million, four hundred seventy-two thousand, ninety-nine".