66466031 has 2 divisors, whose sum is σ = 66466032. Its totient is φ = 66466030.

The previous prime is 66466019. The next prime is 66466033. The reversal of 66466031 is 13066466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66466031 - 2⁶ = 66465967 is a prime.

It is a super-2 number, since 2×66466031² = 8835466553785922, which contains 22 as substring.

Together with 66466033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66466033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33233015 + 33233016.

It is an arithmetic number, because the mean of its divisors is an integer number (33233016).

Almost surely, 2^66466031 is an apocalyptic number.

66466031 is a deficient number, since it is larger than the sum of its proper divisors (1).

66466031 is an equidigital number, since it uses as much as digits as its factorization.

66466031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66466031 is about 8152.6701760834. The cubic root of 66466031 is about 405.0729554088.

The spelling of 66466031 in words is "sixty-six million, four hundred sixty-six thousand, thirty-one".