641673224 has 8 divisors (see below), whose sum is σ = 1203137310. Its totient is φ = 320836608.

The previous prime is 641673191. The next prime is 641673229. The reversal of 641673224 is 422376146.

It can be written as a sum of positive squares in only one way, i.e., 556110724 + 85562500 = 23582^2 + 9250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (641673229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40104569 + ... + 40104584.

Almost surely, 2^641673224 is an apocalyptic number.

It is an amenable number.

641673224 is a deficient number, since it is larger than the sum of its proper divisors (561464086).

641673224 is a wasteful number, since it uses less digits than its factorization.

641673224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80209159 (or 80209155 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 641673224 is about 25331.2696878779. The cubic root of 641673224 is about 862.5242332756.

The spelling of 641673224 in words is "six hundred forty-one million, six hundred seventy-three thousand, two hundred twenty-four".