664634119 has 4 divisors (see below), whose sum is σ = 666343080. Its totient is φ = 662925160.

The previous prime is 664634107. The next prime is 664634129. The reversal of 664634119 is 911436466.

664634119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 664634119 - 2¹¹ = 664632071 is a prime.

It is a super-2 number, since 2×664634119² = 883477024277812322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664634129) 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, 853897 + ... + 854674.

It is an arithmetic number, because the mean of its divisors is an integer number (166585770).

Almost surely, 2^664634119 is an apocalyptic number.

664634119 is a deficient number, since it is larger than the sum of its proper divisors (1708961).

664634119 is a wasteful number, since it uses less digits than its factorization.

664634119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708960.

The product of its digits is 93312, while the sum is 40.

The square root of 664634119 is about 25780.4988120866. The cubic root of 664634119 is about 872.6917639925.

The spelling of 664634119 in words is "six hundred sixty-four million, six hundred thirty-four thousand, one hundred nineteen".