72685149 has 8 divisors (see below), whose sum is σ = 102614400. Its totient is φ = 45606336.

The previous prime is 72685147. The next prime is 72685159. The reversal of 72685149 is 94158627.

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

It is not a de Polignac number, because 72685149 - 2¹ = 72685147 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72685149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72685147) 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, 712549 + ... + 712650.

It is an arithmetic number, because the mean of its divisors is an integer number (12826800).

Almost surely, 2^72685149 is an apocalyptic number.

It is an amenable number.

72685149 is a deficient number, since it is larger than the sum of its proper divisors (29929251).

72685149 is a wasteful number, since it uses less digits than its factorization.

72685149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425219.

The product of its digits is 120960, while the sum is 42.

The square root of 72685149 is about 8525.5585740760. The cubic root of 72685149 is about 417.3322002479.

The spelling of 72685149 in words is "seventy-two million, six hundred eighty-five thousand, one hundred forty-nine".