10066391 has 4 divisors (see below), whose sum is σ = 10128312. Its totient is φ = 10004472.

The previous prime is 10066373. The next prime is 10066411. The reversal of 10066391 is 19366001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19366001 = 3391 ⋅5711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10066391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 10066391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10066321) 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, 30716 + ... + 31041.

It is an arithmetic number, because the mean of its divisors is an integer number (2532078).

Almost surely, 2^10066391 is an apocalyptic number.

10066391 is a deficient number, since it is larger than the sum of its proper divisors (61921).

10066391 is an equidigital number, since it uses as much as digits as its factorization.

10066391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61920.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 10066391 is about 3172.7576333530. The cubic root of 10066391 is about 215.9192013182.

The spelling of 10066391 in words is "ten million, sixty-six thousand, three hundred ninety-one".