66670037 has 6 divisors (see below), whose sum is σ = 77554998. Its totient is φ = 57145704.

The previous prime is 66670033. The next prime is 66670049. The reversal of 66670037 is 73007666.

It can be written as a sum of positive squares in only one way, i.e., 35153041 + 31516996 = 5929^2 + 5614^2 .

It is not a de Polignac number, because 66670037 - 2² = 66670033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66669979 and 66670006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66670033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680258 + ... + 680355.

It is an arithmetic number, because the mean of its divisors is an integer number (12925833).

Almost surely, 2^66670037 is an apocalyptic number.

It is an amenable number.

66670037 is a deficient number, since it is larger than the sum of its proper divisors (10884961).

66670037 is a wasteful number, since it uses less digits than its factorization.

66670037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360627 (or 1360620 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 66670037 is about 8165.1721965921. The cubic root of 66670037 is about 405.4869659391.

The spelling of 66670037 in words is "sixty-six million, six hundred seventy thousand, thirty-seven".