664371134 has 32 divisors (see below), whose sum is σ = 1171279872. Its totient is φ = 276696000.

The previous prime is 664371133. The next prime is 664371161. The reversal of 664371134 is 431173466.

It is a junction number, because it is equal to n+sod(n) for n = 664371094 and 664371103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664371133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153419 + ... + 157689.

It is an arithmetic number, because the mean of its divisors is an integer number (36602496).

Almost surely, 2^664371134 is an apocalyptic number.

664371134 is a deficient number, since it is larger than the sum of its proper divisors (506908738).

664371134 is a wasteful number, since it uses less digits than its factorization.

664371134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592.

The product of its digits is 36288, while the sum is 35.

The square root of 664371134 is about 25775.3978436803. The cubic root of 664371134 is about 872.5766454563.

It can be divided in two parts, 6643 and 71134, that added together give a palindrome (77777).

The spelling of 664371134 in words is "six hundred sixty-four million, three hundred seventy-one thousand, one hundred thirty-four".