66712093 has 16 divisors (see below), whose sum is σ = 81423360. Its totient is φ = 53424000.

The previous prime is 66712091. The next prime is 66712099. The reversal of 66712093 is 39021766.

It is not a de Polignac number, because 66712093 - 2¹ = 66712091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66712091) 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 15 ways as a sum of consecutive naturals, for example, 993 + ... + 11593.

It is an arithmetic number, because the mean of its divisors is an integer number (5088960).

Almost surely, 2^66712093 is an apocalyptic number.

It is an amenable number.

66712093 is a deficient number, since it is larger than the sum of its proper divisors (14711267).

66712093 is a wasteful number, since it uses less digits than its factorization.

66712093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10668.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 66712093 is about 8167.7471190041. The cubic root of 66712093 is about 405.5722095063.

The spelling of 66712093 in words is "sixty-six million, seven hundred twelve thousand, ninety-three".