670543465 has 4 divisors (see below), whose sum is σ = 804652164. Its totient is φ = 536434768.

The previous prime is 670543457. The next prime is 670543483. The reversal of 670543465 is 564345076.

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 271063296 + 399480169 = 16464^2 + 19987^2 .

It is a cyclic number.

It is not a de Polignac number, because 670543465 - 2³ = 670543457 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 67054342 + ... + 67054351.

It is an arithmetic number, because the mean of its divisors is an integer number (201163041).

Almost surely, 2^670543465 is an apocalyptic number.

It is an amenable number.

670543465 is a deficient number, since it is larger than the sum of its proper divisors (134108699).

670543465 is a wasteful number, since it uses less digits than its factorization.

670543465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134108698.

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 670543465 is about 25894.8540254623. The cubic root of 670543465 is about 875.2705405608.

The spelling of 670543465 in words is "six hundred seventy million, five hundred forty-three thousand, four hundred sixty-five".