675644394 has 16 divisors (see below), whose sum is σ = 1355187168. Its totient is φ = 224565072.

The previous prime is 675644393. The next prime is 675644401. The reversal of 675644394 is 493446576.

It is not an unprimeable number, because it can be changed into a prime (675644393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160177 + ... + 164340.

It is an arithmetic number, because the mean of its divisors is an integer number (84699198).

Almost surely, 2^675644394 is an apocalyptic number.

675644394 is an abundant number, since it is smaller than the sum of its proper divisors (679542774).

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

675644394 is a wasteful number, since it uses less digits than its factorization.

675644394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324869.

The product of its digits is 2177280, while the sum is 48.

The square root of 675644394 is about 25993.1605234916. The cubic root of 675644394 is about 877.4843763097.

The spelling of 675644394 in words is "six hundred seventy-five million, six hundred forty-four thousand, three hundred ninety-four".