72899755 has 16 divisors (see below), whose sum is σ = 90987264. Its totient is φ = 56010240.

The previous prime is 72899753. The next prime is 72899759. The reversal of 72899755 is 55799827.

It is not a de Polignac number, because 72899755 - 2¹ = 72899753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72899753) 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 15 ways as a sum of consecutive naturals, for example, 19519 + ... + 22951.

It is an arithmetic number, because the mean of its divisors is an integer number (5686704).

Almost surely, 2^72899755 is an apocalyptic number.

72899755 is a deficient number, since it is larger than the sum of its proper divisors (18087509).

72899755 is a wasteful number, since it uses less digits than its factorization.

72899755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606.

The product of its digits is 1587600, while the sum is 52.

The square root of 72899755 is about 8538.1353350717. The cubic root of 72899755 is about 417.7425270455.

The spelling of 72899755 in words is "seventy-two million, eight hundred ninety-nine thousand, seven hundred fifty-five".