66702393 has 16 divisors (see below), whose sum is σ = 98953600. Its totient is φ = 44407440.

The previous prime is 66702343. The next prime is 66702397. The reversal of 66702393 is 39320766.

It is not a de Polignac number, because 66702393 - 2⁸ = 66702137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66702397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27708 + ... + 30018.

It is an arithmetic number, because the mean of its divisors is an integer number (6184600).

Almost surely, 2^66702393 is an apocalyptic number.

It is an amenable number.

66702393 is a deficient number, since it is larger than the sum of its proper divisors (32251207).

66702393 is a wasteful number, since it uses less digits than its factorization.

66702393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The square root of 66702393 is about 8167.1532984266. The cubic root of 66702393 is about 405.5525516955.

The spelling of 66702393 in words is "sixty-six million, seven hundred two thousand, three hundred ninety-three".