667701 has 6 divisors (see below), whose sum is σ = 964470. Its totient is φ = 445128.

The previous prime is 667699. The next prime is 667727. The reversal of 667701 is 107766.

It can be written as a sum of positive squares in only one way, i.e., 527076 + 140625 = 726^2 + 375^2 .

It is not a de Polignac number, because 667701 - 2¹ = 667699 is a prime.

It is an Ulam number.

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 667701.

It is not an unprimeable number, because it can be changed into a prime (667741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37086 + ... + 37103.

It is an arithmetic number, because the mean of its divisors is an integer number (160745).

2⁶⁶⁷⁷⁰¹ is an apocalyptic number.

It is an amenable number.

667701 is a deficient number, since it is larger than the sum of its proper divisors (296769).

667701 is a wasteful number, since it uses less digits than its factorization.

667701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74195 (or 74192 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 667701 is about 817.1297326618. The cubic root of 667701 is about 87.4032017985.

The spelling of 667701 in words is "six hundred sixty-seven thousand, seven hundred one".