66345105 has 16 divisors (see below), whose sum is σ = 106534080. Its totient is φ = 35256768.

The previous prime is 66345091. The next prime is 66345109. The reversal of 66345105 is 50154366.

66345105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66345105 - 2¹⁶ = 66279569 is a prime.

It is a super-2 number, since 2×66345105² = 8803345914922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66345109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3570 + ... + 12059.

It is an arithmetic number, because the mean of its divisors is an integer number (6658380).

Almost surely, 2^66345105 is an apocalyptic number.

It is an amenable number.

66345105 is a deficient number, since it is larger than the sum of its proper divisors (40188975).

66345105 is a wasteful number, since it uses less digits than its factorization.

66345105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15920.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 66345105 is about 8145.2504565544. The cubic root of 66345105 is about 404.8271476980.

The spelling of 66345105 in words is "sixty-six million, three hundred forty-five thousand, one hundred five".