72806359 has 4 divisors (see below), whose sum is σ = 77089104. Its totient is φ = 68523616.

The previous prime is 72806333. The next prime is 72806381. The reversal of 72806359 is 95360827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95360827 = 2003 ⋅47609.

It is a cyclic number.

It is not a de Polignac number, because 72806359 - 2⁷ = 72806231 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72806329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141347 + ... + 2141380.

It is an arithmetic number, because the mean of its divisors is an integer number (19272276).

Almost surely, 2^72806359 is an apocalyptic number.

72806359 is a deficient number, since it is larger than the sum of its proper divisors (4282745).

72806359 is a wasteful number, since it uses less digits than its factorization.

72806359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282744.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 72806359 is about 8532.6642380912. The cubic root of 72806359 is about 417.5640529451.

The spelling of 72806359 in words is "seventy-two million, eight hundred six thousand, three hundred fifty-nine".