80736613 has 8 divisors (see below), whose sum is σ = 82103000. Its totient is φ = 79377408.

The previous prime is 80736589. The next prime is 80736619. The reversal of 80736613 is 31663708.

It can be written as a sum of positive squares in 4 ways, for example, as 35605089 + 45131524 = 5967^2 + 6718^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 80736613 - 2¹³ = 80728421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80736619) 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, 23893 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (10262875).

Almost surely, 2^80736613 is an apocalyptic number.

It is an amenable number.

80736613 is a deficient number, since it is larger than the sum of its proper divisors (1366387).

80736613 is a wasteful number, since it uses less digits than its factorization.

80736613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 80736613 is about 8985.3554743260. The cubic root of 80736613 is about 432.2053868049.

The spelling of 80736613 in words is "eighty million, seven hundred thirty-six thousand, six hundred thirteen".