671804546 has 64 divisors (see below), whose sum is σ = 1272326400. Its totient is φ = 259531776.

The previous prime is 671804543. The next prime is 671804563. The reversal of 671804546 is 645408176.

It is a super-2 number, since 2×671804546² = 902642696052532232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671804543) 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 31 ways as a sum of consecutive naturals, for example, 562526 + ... + 563718.

It is an arithmetic number, because the mean of its divisors is an integer number (19880100).

Almost surely, 2^671804546 is an apocalyptic number.

671804546 is a deficient number, since it is larger than the sum of its proper divisors (600521854).

671804546 is a wasteful number, since it uses less digits than its factorization.

671804546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 671804546 is about 25919.1926185983. The cubic root of 671804546 is about 875.8188996505.

The spelling of 671804546 in words is "six hundred seventy-one million, eight hundred four thousand, five hundred forty-six".