66950093 has 4 divisors (see below), whose sum is σ = 76514400. Its totient is φ = 57385788.

The previous prime is 66950017. The next prime is 66950113. The reversal of 66950093 is 39005966.

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 an emirpimes, since its reverse is a distinct semiprime: 39005966 = 2 ⋅19502983.

It is a cyclic number.

It is not a de Polignac number, because 66950093 - 2¹² = 66945997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66950003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4782143 + ... + 4782156.

It is an arithmetic number, because the mean of its divisors is an integer number (19128600).

Almost surely, 2^66950093 is an apocalyptic number.

It is an amenable number.

66950093 is a deficient number, since it is larger than the sum of its proper divisors (9564307).

66950093 is an equidigital number, since it uses as much as digits as its factorization.

66950093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9564306.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 66950093 is about 8182.3036487288. The cubic root of 66950093 is about 406.0539393824.

The spelling of 66950093 in words is "sixty-six million, nine hundred fifty thousand, ninety-three".