66910037 has 4 divisors (see below), whose sum is σ = 66926496. Its totient is φ = 66893580.

The previous prime is 66910031. The next prime is 66910049. The reversal of 66910037 is 73001966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66910037 - 2⁸ = 66909781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66909985 and 66910012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66910031) 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, 2768 + ... + 11894.

It is an arithmetic number, because the mean of its divisors is an integer number (16731624).

Almost surely, 2^66910037 is an apocalyptic number.

It is an amenable number.

66910037 is a deficient number, since it is larger than the sum of its proper divisors (16459).

66910037 is an equidigital number, since it uses as much as digits as its factorization.

66910037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 66910037 is about 8179.8555610720. The cubic root of 66910037 is about 405.9729430229.

The spelling of 66910037 in words is "sixty-six million, nine hundred ten thousand, thirty-seven".