66404337 has 8 divisors (see below), whose sum is σ = 89323104. Its totient is φ = 43877568.

The previous prime is 66404321. The next prime is 66404347. The reversal of 66404337 is 73340466.

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

It is not a de Polignac number, because 66404337 - 2⁴ = 66404321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66404298 and 66404307.

It is not an unprimeable number, because it can be changed into a prime (66404347) 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 7 ways as a sum of consecutive naturals, for example, 97603 + ... + 98280.

It is an arithmetic number, because the mean of its divisors is an integer number (11165388).

Almost surely, 2^66404337 is an apocalyptic number.

It is an amenable number.

66404337 is a deficient number, since it is larger than the sum of its proper divisors (22918767).

66404337 is a wasteful number, since it uses less digits than its factorization.

66404337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195999.

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 66404337 is about 8148.8856293361. The cubic root of 66404337 is about 404.9475865718.

The spelling of 66404337 in words is "sixty-six million, four hundred four thousand, three hundred thirty-seven".