670549356 has 18 divisors (see below), whose sum is σ = 1694999852. Its totient is φ = 223516440.

The previous prime is 670549351. The next prime is 670549367. The reversal of 670549356 is 653945076.

670549356 is a `hidden beast` number, since 6 + 70 + 549 + 35 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (670549351) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 9313150 + ... + 9313221.

Almost surely, 2^670549356 is an apocalyptic number.

It is an amenable number.

670549356 is an abundant number, since it is smaller than the sum of its proper divisors (1024450496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670549356 is a wasteful number, since it uses less digits than its factorization.

670549356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626381 (or 18626376 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The square root of 670549356 is about 25894.9677736814. The cubic root of 670549356 is about 875.2731037572.

The spelling of 670549356 in words is "six hundred seventy million, five hundred forty-nine thousand, three hundred fifty-six".