670187338 has 4 divisors (see below), whose sum is σ = 1005281010. Its totient is φ = 335093668.

The previous prime is 670187333. The next prime is 670187339. The reversal of 670187338 is 833781076.

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

It can be written as a sum of positive squares in only one way, i.e., 515607849 + 154579489 = 22707^2 + 12433^2 .

It is a junction number, because it is equal to n+sod(n) for n = 670187294 and 670187303.

It is not an unprimeable number, because it can be changed into a prime (670187333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167546833 + ... + 167546836.

Almost surely, 2^670187338 is an apocalyptic number.

670187338 is a deficient number, since it is larger than the sum of its proper divisors (335093672).

670187338 is a wasteful number, since it uses less digits than its factorization.

670187338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335093671.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 670187338 is about 25887.9767073443. The cubic root of 670187338 is about 875.1155604653.

The spelling of 670187338 in words is "six hundred seventy million, one hundred eighty-seven thousand, three hundred thirty-eight".