72353865 has 8 divisors (see below), whose sum is σ = 115766208. Its totient is φ = 38588720.

The previous prime is 72353863. The next prime is 72353891. The reversal of 72353865 is 56835327.

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

It is not a de Polignac number, because 72353865 - 2¹ = 72353863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72353863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411781 + ... + 2411810.

It is an arithmetic number, because the mean of its divisors is an integer number (14470776).

Almost surely, 2^72353865 is an apocalyptic number.

It is an amenable number.

72353865 is a deficient number, since it is larger than the sum of its proper divisors (43412343).

72353865 is a wasteful number, since it uses less digits than its factorization.

72353865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823599.

The product of its digits is 151200, while the sum is 39.

The square root of 72353865 is about 8506.1075116648. The cubic root of 72353865 is about 416.6971963408.

The spelling of 72353865 in words is "seventy-two million, three hundred fifty-three thousand, eight hundred sixty-five".