664037 has 16 divisors (see below), whose sum is σ = 793152. Its totient is φ = 549120.

The previous prime is 664019. The next prime is 664043. The reversal of 664037 is 730466.

It is not a de Polignac number, because 664037 - 2⁶ = 663973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663997 and 664015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664067) 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, 9878 + ... + 9944.

It is an arithmetic number, because the mean of its divisors is an integer number (49572).

2⁶⁶⁴⁰³⁷ is an apocalyptic number.

664037 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

664037 is a deficient number, since it is larger than the sum of its proper divisors (129115).

664037 is a wasteful number, since it uses less digits than its factorization.

664037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 664037 is about 814.8846544144. The cubic root of 664037 is about 87.2430338469.

The spelling of 664037 in words is "six hundred sixty-four thousand, thirty-seven".