66433345 has 16 divisors (see below), whose sum is σ = 89968320. Its totient is φ = 46648000.

The previous prime is 66433343. The next prime is 66433349. The reversal of 66433345 is 54333466.

It is not a de Polignac number, because 66433345 - 2¹ = 66433343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66433345.

It is not an unprimeable number, because it can be changed into a prime (66433343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19231 + ... + 22420.

It is an arithmetic number, because the mean of its divisors is an integer number (5623020).

Almost surely, 2^66433345 is an apocalyptic number.

It is an amenable number.

66433345 is a deficient number, since it is larger than the sum of its proper divisors (23534975).

66433345 is a wasteful number, since it uses less digits than its factorization.

66433345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41696.

The product of its digits is 77760, while the sum is 34.

The square root of 66433345 is about 8150.6653102676. The cubic root of 66433345 is about 405.0065436122.

The spelling of 66433345 in words is "sixty-six million, four hundred thirty-three thousand, three hundred forty-five".