72772865 has 8 divisors (see below), whose sum is σ = 95266368. Its totient is φ = 52925680.

The previous prime is 72772849. The next prime is 72772867. The reversal of 72772865 is 56827727.

It is a happy number.

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

It is not a de Polignac number, because 72772865 - 2⁴ = 72772849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72772867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661517 + ... + 661626.

It is an arithmetic number, because the mean of its divisors is an integer number (11908296).

Almost surely, 2^72772865 is an apocalyptic number.

It is an amenable number.

72772865 is a deficient number, since it is larger than the sum of its proper divisors (22493503).

72772865 is a wasteful number, since it uses less digits than its factorization.

72772865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323159.

The product of its digits is 329280, while the sum is 44.

The square root of 72772865 is about 8530.7013193524. The cubic root of 72772865 is about 417.5000107569.

It can be divided in two parts, 72772 and 865, that added together give a palindrome (73637).

The spelling of 72772865 in words is "seventy-two million, seven hundred seventy-two thousand, eight hundred sixty-five".