66457033 has 2 divisors, whose sum is σ = 66457034. Its totient is φ = 66457032.

The previous prime is 66457031. The next prime is 66457049. The reversal of 66457033 is 33075466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35676729 + 30780304 = 5973^2 + 5548^2 .

It is a cyclic number.

It is not a de Polignac number, because 66457033 - 2¹ = 66457031 is a prime.

Together with 66457031, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66457033.

It is not a weakly prime, because it can be changed into another prime (66457031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33228516 + 33228517.

It is an arithmetic number, because the mean of its divisors is an integer number (33228517).

Almost surely, 2^66457033 is an apocalyptic number.

It is an amenable number.

66457033 is a deficient number, since it is larger than the sum of its proper divisors (1).

66457033 is an equidigital number, since it uses as much as digits as its factorization.

66457033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 66457033 is about 8152.1183136655. The cubic root of 66457033 is about 405.0546753396.

The spelling of 66457033 in words is "sixty-six million, four hundred fifty-seven thousand, thirty-three".