672749436 has 24 divisors (see below), whose sum is σ = 1581045760. Its totient is φ = 222635952.

The previous prime is 672749431. The next prime is 672749461. The reversal of 672749436 is 634947276.

672749436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672749431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199996 + ... + 203331.

Almost surely, 2^672749436 is an apocalyptic number.

It is an amenable number.

672749436 is an abundant number, since it is smaller than the sum of its proper divisors (908296324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672749436 is a wasteful number, since it uses less digits than its factorization.

672749436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403473 (or 403471 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 48.

The square root of 672749436 is about 25937.4138263629. The cubic root of 672749436 is about 876.2293190425.

The spelling of 672749436 in words is "six hundred seventy-two million, seven hundred forty-nine thousand, four hundred thirty-six".