662164823 has 4 divisors (see below), whose sum is σ = 671235648. Its totient is φ = 653094000.

The previous prime is 662164781. The next prime is 662164837. The reversal of 662164823 is 328461266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 662164823 - 2⁶ = 662164759 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 (662164873) 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, 4535303 + ... + 4535448.

It is an arithmetic number, because the mean of its divisors is an integer number (167808912).

Almost surely, 2^662164823 is an apocalyptic number.

662164823 is a deficient number, since it is larger than the sum of its proper divisors (9070825).

662164823 is an equidigital number, since it uses as much as digits as its factorization.

662164823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070824.

The product of its digits is 82944, while the sum is 38.

The square root of 662164823 is about 25732.5634750990. The cubic root of 662164823 is about 871.6096605895.

The spelling of 662164823 in words is "six hundred sixty-two million, one hundred sixty-four thousand, eight hundred twenty-three".