66182801 has 4 divisors (see below), whose sum is σ = 67170672. Its totient is φ = 65194932.

The previous prime is 66182797. The next prime is 66182821. The reversal of 66182801 is 10828166.

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: 10828166 = 2 ⋅5414083.

It is a cyclic number.

It is not a de Polignac number, because 66182801 - 2² = 66182797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66182821) 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, 493835 + ... + 493968.

It is an arithmetic number, because the mean of its divisors is an integer number (16792668).

Almost surely, 2^66182801 is an apocalyptic number.

It is an amenable number.

66182801 is a deficient number, since it is larger than the sum of its proper divisors (987871).

66182801 is an equidigital number, since it uses as much as digits as its factorization.

66182801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987870.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 66182801 is about 8135.2812489797. The cubic root of 66182801 is about 404.4967605115.

The spelling of 66182801 in words is "sixty-six million, one hundred eighty-two thousand, eight hundred one".