66737161 has 8 divisors (see below), whose sum is σ = 68406624. Its totient is φ = 65073120.

The previous prime is 66737137. The next prime is 66737171. The reversal of 66737161 is 16173766.

66737161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66737161 - 2²³ = 58348553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66737161.

It is not an unprimeable number, because it can be changed into a prime (66737131) 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 7 ways as a sum of consecutive naturals, for example, 35946 + ... + 37756.

It is an arithmetic number, because the mean of its divisors is an integer number (8550828).

Almost surely, 2^66737161 is an apocalyptic number.

It is an amenable number.

66737161 is a deficient number, since it is larger than the sum of its proper divisors (1669463).

66737161 is a wasteful number, since it uses less digits than its factorization.

66737161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711.

The product of its digits is 31752, while the sum is 37.

The square root of 66737161 is about 8169.2815473578. The cubic root of 66737161 is about 405.6230029507.

The spelling of 66737161 in words is "sixty-six million, seven hundred thirty-seven thousand, one hundred sixty-one".