672748531 has 16 divisors (see below), whose sum is σ = 876705984. Its totient is φ = 500972544.

The previous prime is 672748529. The next prime is 672748537. The reversal of 672748531 is 135847276.

672748531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 672748531 - 2¹ = 672748529 is a prime.

It is a super-2 number, since 2×672748531² = 905181171925315922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (672748537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215890 + ... + 218983.

It is an arithmetic number, because the mean of its divisors is an integer number (54794124).

Almost surely, 2^672748531 is an apocalyptic number.

672748531 is a deficient number, since it is larger than the sum of its proper divisors (203957453).

672748531 is a wasteful number, since it uses less digits than its factorization.

672748531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434910.

The product of its digits is 282240, while the sum is 43.

The square root of 672748531 is about 25937.3963805159. The cubic root of 672748531 is about 876.2289261335.

The spelling of 672748531 in words is "six hundred seventy-two million, seven hundred forty-eight thousand, five hundred thirty-one".