72735199 has 4 divisors (see below), whose sum is σ = 72983736. Its totient is φ = 72486664.

The previous prime is 72735149. The next prime is 72735227. The reversal of 72735199 is 99153727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99153727 = 2593 ⋅38239.

It is a cyclic number.

It is not a de Polignac number, because 72735199 - 2⁷ = 72735071 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 (72735139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123829 + ... + 124414.

It is an arithmetic number, because the mean of its divisors is an integer number (18245934).

Almost surely, 2^72735199 is an apocalyptic number.

72735199 is a deficient number, since it is larger than the sum of its proper divisors (248537).

72735199 is a wasteful number, since it uses less digits than its factorization.

72735199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248536.

The product of its digits is 119070, while the sum is 43.

The square root of 72735199 is about 8528.4933604946. The cubic root of 72735199 is about 417.4279680192.

The spelling of 72735199 in words is "seventy-two million, seven hundred thirty-five thousand, one hundred ninety-nine".