672381541 has 12 divisors (see below), whose sum is σ = 729785700. Its totient is φ = 619207680.

The previous prime is 672381529. The next prime is 672381571. The reversal of 672381541 is 145183276.

It can be written as a sum of positive squares in 6 ways, for example, as 16641 + 672364900 = 129^2 + 25930^2 .

It is not a de Polignac number, because 672381541 - 2⁹ = 672381029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672381541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672381571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71451 + ... + 80311.

It is an arithmetic number, because the mean of its divisors is an integer number (60815475).

Almost surely, 2^672381541 is an apocalyptic number.

It is an amenable number.

672381541 is a deficient number, since it is larger than the sum of its proper divisors (57404159).

672381541 is a wasteful number, since it uses less digits than its factorization.

672381541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336 (or 9323 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 672381541 is about 25930.3208811615. The cubic root of 672381541 is about 876.0695670620.

The spelling of 672381541 in words is "six hundred seventy-two million, three hundred eighty-one thousand, five hundred forty-one".