664174 has 8 divisors (see below), whose sum is σ = 1138608. Its totient is φ = 284640.

The previous prime is 664151. The next prime is 664177. The reversal of 664174 is 471466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×664174² = 882254204552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664177) 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, 23707 + ... + 23734.

It is an arithmetic number, because the mean of its divisors is an integer number (142326).

2⁶⁶⁴¹⁷⁴ is an apocalyptic number.

664174 is a deficient number, since it is larger than the sum of its proper divisors (474434).

664174 is a wasteful number, since it uses less digits than its factorization.

664174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47450.

The product of its digits is 4032, while the sum is 28.

The square root of 664174 is about 814.9687110558. The cubic root of 664174 is about 87.2490332485.

It can be divided in two parts, 664 and 174, that added together give a palindrome (838).

The spelling of 664174 in words is "six hundred sixty-four thousand, one hundred seventy-four".