664190 has 16 divisors (see below), whose sum is σ = 1266192. Its totient is φ = 249984.

The previous prime is 664177. The next prime is 664193. The reversal of 664190 is 91466.

664190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×664190² = 882296712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (79137).

2⁶⁶⁴¹⁹⁰ is an apocalyptic number.

664190 is a deficient number, since it is larger than the sum of its proper divisors (602002).

664190 is a wasteful number, since it uses less digits than its factorization.

664190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 664190 is about 814.9785273245. The cubic root of 664190 is about 87.2497338547.

The spelling of 664190 in words is "six hundred sixty-four thousand, one hundred ninety".