80726165 has 8 divisors (see below), whose sum is σ = 104323128. Its totient is φ = 59613120.

The previous prime is 80726137. The next prime is 80726167. The reversal of 80726165 is 56162708.

It can be written as a sum of positive squares in 4 ways, for example, as 552049 + 80174116 = 743^2 + 8954^2 .

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

It is not a de Polignac number, because 80726165 - 2²⁶ = 13617301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80726167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620906 + ... + 621035.

It is an arithmetic number, because the mean of its divisors is an integer number (13040391).

Almost surely, 2^80726165 is an apocalyptic number.

It is an amenable number.

80726165 is a deficient number, since it is larger than the sum of its proper divisors (23596963).

80726165 is a wasteful number, since it uses less digits than its factorization.

80726165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241959.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 80726165 is about 8984.7740650503. The cubic root of 80726165 is about 432.1867423241.

The spelling of 80726165 in words is "eighty million, seven hundred twenty-six thousand, one hundred sixty-five".