664162033 has 4 divisors (see below), whose sum is σ = 665467380. Its totient is φ = 662856688.

The previous prime is 664162021. The next prime is 664162039. The reversal of 664162033 is 330261466.

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

It can be written as a sum of positive squares in 2 ways, for example, as 252396769 + 411765264 = 15887^2 + 20292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664162033 is a prime.

It is a super-2 number, since 2×664162033² = 882222412157386178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664161986 and 664162004.

It is not an unprimeable number, because it can be changed into a prime (664162039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651910 + ... + 652927.

It is an arithmetic number, because the mean of its divisors is an integer number (166366845).

Almost surely, 2^664162033 is an apocalyptic number.

It is an amenable number.

664162033 is a deficient number, since it is larger than the sum of its proper divisors (1305347).

664162033 is a wasteful number, since it uses less digits than its factorization.

664162033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305346.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 664162033 is about 25771.3413116198. The cubic root of 664162033 is about 872.4850923143.

The spelling of 664162033 in words is "six hundred sixty-four million, one hundred sixty-two thousand, thirty-three".