670407005 has 8 divisors (see below), whose sum is σ = 809139672. Its totient is φ = 533224768.

The previous prime is 670406953. The next prime is 670407043. The reversal of 670407005 is 500704076.

It can be written as a sum of positive squares in 4 ways, for example, as 20259001 + 650148004 = 4501^2 + 25498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670407005 - 2⁶ = 670406941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386654 + ... + 388383.

It is an arithmetic number, because the mean of its divisors is an integer number (101142459).

Almost surely, 2^670407005 is an apocalyptic number.

It is an amenable number.

670407005 is a deficient number, since it is larger than the sum of its proper divisors (138732667).

670407005 is a wasteful number, since it uses less digits than its factorization.

670407005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775215.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 670407005 is about 25892.2190049443. The cubic root of 670407005 is about 875.2111620978.

The spelling of 670407005 in words is "six hundred seventy million, four hundred seven thousand, five".