670216378 has 8 divisors (see below), whose sum is σ = 1082657268. Its totient is φ = 309330624.

The previous prime is 670216277. The next prime is 670216433. The reversal of 670216378 is 873612076.

It can be written as a sum of positive squares in 2 ways, for example, as 662393169 + 7823209 = 25737^2 + 2797^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 670216378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12888751 + ... + 12888802.

Almost surely, 2^670216378 is an apocalyptic number.

670216378 is a deficient number, since it is larger than the sum of its proper divisors (412440890).

670216378 is a wasteful number, since it uses less digits than its factorization.

670216378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25777568.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 670216378 is about 25888.5375793999. The cubic root of 670216378 is about 875.1282002091.

The spelling of 670216378 in words is "six hundred seventy million, two hundred sixteen thousand, three hundred seventy-eight".