672183641 has 4 divisors (see below), whose sum is σ = 672582372. Its totient is φ = 671784912.

The previous prime is 672183623. The next prime is 672183667. The reversal of 672183641 is 146381276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 393427225 + 278756416 = 19835^2 + 16696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672183641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672183595 and 672183604.

It is not an unprimeable number, because it can be changed into a prime (672183541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196826 + ... + 200211.

It is an arithmetic number, because the mean of its divisors is an integer number (168145593).

Almost surely, 2^672183641 is an apocalyptic number.

It is an amenable number.

672183641 is a deficient number, since it is larger than the sum of its proper divisors (398731).

672183641 is a wasteful number, since it uses less digits than its factorization.

672183641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398730.

The product of its digits is 48384, while the sum is 38.

The square root of 672183641 is about 25926.5046043619. The cubic root of 672183641 is about 875.9836083371.

The spelling of 672183641 in words is "six hundred seventy-two million, one hundred eighty-three thousand, six hundred forty-one".