672555738 has 8 divisors (see below), whose sum is σ = 1345111488. Its totient is φ = 224185244.

The previous prime is 672555731. The next prime is 672555739. The reversal of 672555738 is 837555276.

It is a sphenic number, since it is the product of 3 distinct primes.

672555738 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (672555731) 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 3 ways as a sum of consecutive naturals, for example, 56046306 + ... + 56046317.

It is an arithmetic number, because the mean of its divisors is an integer number (168138936).

Almost surely, 2^672555738 is an apocalyptic number.

672555738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

672555738 is a wasteful number, since it uses less digits than its factorization.

672555738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112092628.

The product of its digits is 1764000, while the sum is 48.

The square root of 672555738 is about 25933.6796077996. The cubic root of 672555738 is about 876.1452163295.

The spelling of 672555738 in words is "six hundred seventy-two million, five hundred fifty-five thousand, seven hundred thirty-eight".