72549623 has 8 divisors (see below), whose sum is σ = 75902400. Its totient is φ = 69272320.

The previous prime is 72549599. The next prime is 72549649. The reversal of 72549623 is 32694527.

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

It is a cyclic number.

It is not a de Polignac number, because 72549623 - 2⁶ = 72549559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72542623) 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 7 ways as a sum of consecutive naturals, for example, 16898 + ... + 20751.

It is an arithmetic number, because the mean of its divisors is an integer number (9487800).

Almost surely, 2^72549623 is an apocalyptic number.

72549623 is a deficient number, since it is larger than the sum of its proper divisors (3352777).

72549623 is a wasteful number, since it uses less digits than its factorization.

72549623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37737.

The product of its digits is 90720, while the sum is 38.

The square root of 72549623 is about 8517.6066474098. The cubic root of 72549623 is about 417.0726582194.

The spelling of 72549623 in words is "seventy-two million, five hundred forty-nine thousand, six hundred twenty-three".