672573726 has 64 divisors (see below), whose sum is σ = 1646461440. Its totient is φ = 201813120.

The previous prime is 672573721. The next prime is 672573743. The reversal of 672573726 is 627375276.

672573726 is a `hidden beast` number, since 6 + 7 + 2 + 573 + 72 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672573721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55686 + ... + 66678.

It is an arithmetic number, because the mean of its divisors is an integer number (25725960).

Almost surely, 2^672573726 is an apocalyptic number.

672573726 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 672573726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823230720).

672573726 is an abundant number, since it is smaller than the sum of its proper divisors (973887714).

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

672573726 is a wasteful number, since it uses less digits than its factorization.

672573726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11118 (or 11112 counting only the distinct ones).

The product of its digits is 740880, while the sum is 45.

The square root of 672573726 is about 25934.0264131893. The cubic root of 672573726 is about 876.1530273102.

The spelling of 672573726 in words is "six hundred seventy-two million, five hundred seventy-three thousand, seven hundred twenty-six".