66166301 has 4 divisors (see below), whose sum is σ = 66182592. Its totient is φ = 66150012.

The previous prime is 66166291. The next prime is 66166327. The reversal of 66166301 is 10366166.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66166301 - 2²² = 61971997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66166381) 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, 3446 + ... + 12008.

It is an arithmetic number, because the mean of its divisors is an integer number (16545648).

Almost surely, 2^66166301 is an apocalyptic number.

It is an amenable number.

66166301 is a deficient number, since it is larger than the sum of its proper divisors (16291).

66166301 is an equidigital number, since it uses as much as digits as its factorization.

66166301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16290.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 66166301 is about 8134.2670843783. The cubic root of 66166301 is about 404.4631427580.

The spelling of 66166301 in words is "sixty-six million, one hundred sixty-six thousand, three hundred one".