66837107 has 4 divisors (see below), whose sum is σ = 66857136. Its totient is φ = 66817080.

The previous prime is 66837101. The next prime is 66837137. The reversal of 66837107 is 70173866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66837107 - 2¹⁶ = 66771571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66837101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3668 + ... + 12129.

It is an arithmetic number, because the mean of its divisors is an integer number (16714284).

Almost surely, 2^66837107 is an apocalyptic number.

66837107 is a deficient number, since it is larger than the sum of its proper divisors (20029).

66837107 is a wasteful number, since it uses less digits than its factorization.

66837107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 66837107 is about 8175.3964429867. The cubic root of 66837107 is about 405.8253898219.

The spelling of 66837107 in words is "sixty-six million, eight hundred thirty-seven thousand, one hundred seven".