670549402 has 8 divisors (see below), whose sum is σ = 1006391700. Its totient is φ = 335085504.

The previous prime is 670549391. The next prime is 670549421. The reversal of 670549402 is 204945076.

It can be written as a sum of positive squares in 2 ways, for example, as 507195441 + 163353961 = 22521^2 + 12781^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 90127 + ... + 97282.

Almost surely, 2^670549402 is an apocalyptic number.

670549402 is a deficient number, since it is larger than the sum of its proper divisors (335842298).

670549402 is a wasteful number, since it uses less digits than its factorization.

670549402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189200.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 670549402 is about 25894.9686618849. The cubic root of 670549402 is about 875.2731237719.

The spelling of 670549402 in words is "six hundred seventy million, five hundred forty-nine thousand, four hundred two".