671624433 has 16 divisors (see below), whose sum is σ = 995404800. Its totient is φ = 447567120.

The previous prime is 671624419. The next prime is 671624441. The reversal of 671624433 is 334426176.

It is a happy number.

671624433 is a `hidden beast` number, since 67 + 162 + 4 + 433 = 666.

It is not a de Polignac number, because 671624433 - 2⁹ = 671623921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671624453) 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, 109303 + ... + 115283.

It is an arithmetic number, because the mean of its divisors is an integer number (62212800).

Almost surely, 2^671624433 is an apocalyptic number.

It is an amenable number.

671624433 is a deficient number, since it is larger than the sum of its proper divisors (323780367).

671624433 is a wasteful number, since it uses less digits than its factorization.

671624433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10149 (or 10143 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 671624433 is about 25915.7178754516. The cubic root of 671624433 is about 875.7406226824.

The spelling of 671624433 in words is "six hundred seventy-one million, six hundred twenty-four thousand, four hundred thirty-three".