671094645 has 16 divisors (see below), whose sum is σ = 1156348032. Its totient is φ = 330384960.

The previous prime is 671094643. The next prime is 671094653. The reversal of 671094645 is 546490176.

It is not a de Polignac number, because 671094645 - 2¹ = 671094643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671094597 and 671094606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671094643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720561 + ... + 1720950.

It is an arithmetic number, because the mean of its divisors is an integer number (72271752).

Almost surely, 2^671094645 is an apocalyptic number.

671094645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

671094645 is a deficient number, since it is larger than the sum of its proper divisors (485253387).

671094645 is a wasteful number, since it uses less digits than its factorization.

671094645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441532.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 671094645 is about 25905.4944944118. The cubic root of 671094645 is about 875.5102960813.

The spelling of 671094645 in words is "six hundred seventy-one million, ninety-four thousand, six hundred forty-five".