672732445 has 32 divisors (see below), whose sum is σ = 1025498880. Its totient is φ = 411440640.

The previous prime is 672732439. The next prime is 672732491. The reversal of 672732445 is 544237276.

It is a happy number.

It is not a de Polignac number, because 672732445 - 2¹³ = 672724253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672732398 and 672732407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3921 + ... + 36889.

It is an arithmetic number, because the mean of its divisors is an integer number (32046840).

Almost surely, 2^672732445 is an apocalyptic number.

It is an amenable number.

672732445 is a deficient number, since it is larger than the sum of its proper divisors (352766435).

672732445 is a wasteful number, since it uses less digits than its factorization.

672732445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33045.

The product of its digits is 282240, while the sum is 40.

The square root of 672732445 is about 25937.0862858572. The cubic root of 672732445 is about 876.2219422804.

The spelling of 672732445 in words is "six hundred seventy-two million, seven hundred thirty-two thousand, four hundred forty-five".