667465 has 4 divisors (see below), whose sum is σ = 800964. Its totient is φ = 533968.

The previous prime is 667463. The next prime is 667477. The reversal of 667465 is 564766.

667465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564766 = 2 ⋅282383.

It can be written as a sum of positive squares in 2 ways, for example, as 413449 + 254016 = 643^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 667465 - 2¹ = 667463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667463) 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, 66742 + ... + 66751.

It is an arithmetic number, because the mean of its divisors is an integer number (200241).

2⁶⁶⁷⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

667465 is a deficient number, since it is larger than the sum of its proper divisors (133499).

667465 is a wasteful number, since it uses less digits than its factorization.

667465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133498.

The product of its digits is 30240, while the sum is 34.

The square root of 667465 is about 816.9853119855. The cubic root of 667465 is about 87.3929029840.

The spelling of 667465 in words is "six hundred sixty-seven thousand, four hundred sixty-five".