668037 has 4 divisors (see below), whose sum is σ = 890720. Its totient is φ = 445356.

The previous prime is 668033. The next prime is 668047. The reversal of 668037 is 730866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 668037 - 2² = 668033 is a prime.

It is a D-number.

It is a Duffinian number.

668037 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 667995 and 668013.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668037.

It is not an unprimeable number, because it can be changed into a prime (668033) 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, 111337 + ... + 111342.

It is an arithmetic number, because the mean of its divisors is an integer number (222680).

2⁶⁶⁸⁰³⁷ is an apocalyptic number.

It is an amenable number.

668037 is a deficient number, since it is larger than the sum of its proper divisors (222683).

668037 is a wasteful number, since it uses less digits than its factorization.

668037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222682.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 668037 is about 817.3353045109. The cubic root of 668037 is about 87.4178603314.

The spelling of 668037 in words is "six hundred sixty-eight thousand, thirty-seven".