66355345 has 32 divisors (see below), whose sum is σ = 98058240. Its totient is φ = 42102720.

The previous prime is 66355337. The next prime is 66355349. The reversal of 66355345 is 54355366.

It is not a de Polignac number, because 66355345 - 2³ = 66355337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66355349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23626 + ... + 26284.

It is an arithmetic number, because the mean of its divisors is an integer number (3064320).

Almost surely, 2^66355345 is an apocalyptic number.

It is an amenable number.

66355345 is a deficient number, since it is larger than the sum of its proper divisors (31702895).

66355345 is a wasteful number, since it uses less digits than its factorization.

66355345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725.

The product of its digits is 162000, while the sum is 37.

The square root of 66355345 is about 8145.8790194797. The cubic root of 66355345 is about 404.8479742369.

The spelling of 66355345 in words is "sixty-six million, three hundred fifty-five thousand, three hundred forty-five".