66371693 has 8 divisors (see below), whose sum is σ = 70122720. Its totient is φ = 62646480.

The previous prime is 66371687. The next prime is 66371699. The reversal of 66371693 is 39617366.

It is an interprime number because it is at equal distance from previous prime (66371687) and next prime (66371699).

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 66371693 - 2¹⁴ = 66355309 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 66371693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66371699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (8765340).

Almost surely, 2^66371693 is an apocalyptic number.

It is an amenable number.

66371693 is a deficient number, since it is larger than the sum of its proper divisors (3751027).

66371693 is a wasteful number, since it uses less digits than its factorization.

66371693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12907.

The product of its digits is 122472, while the sum is 41.

The square root of 66371693 is about 8146.8824098547. The cubic root of 66371693 is about 404.8812190405.

The spelling of 66371693 in words is "sixty-six million, three hundred seventy-one thousand, six hundred ninety-three".