670465 has 4 divisors (see below), whose sum is σ = 804564. Its totient is φ = 536368.

The previous prime is 670457. The next prime is 670471. The reversal of 670465 is 564076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 262144 = 639^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 670465 - 2³ = 670457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67042 + ... + 67051.

It is an arithmetic number, because the mean of its divisors is an integer number (201141).

2⁶⁷⁰⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

670465 is a deficient number, since it is larger than the sum of its proper divisors (134099).

670465 is a wasteful number, since it uses less digits than its factorization.

670465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134098.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 670465 is about 818.8192718787. The cubic root of 670465 is about 87.5236398711.

The spelling of 670465 in words is "six hundred seventy thousand, four hundred sixty-five".