80712617 has 8 divisors (see below), whose sum is σ = 85598856. Its totient is φ = 75841792.

The previous prime is 80712613. The next prime is 80712629. The reversal of 80712617 is 71621708.

It can be written as a sum of positive squares in 4 ways, for example, as 62980096 + 17732521 = 7936^2 + 4211^2 .

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 80712617 - 2² = 80712613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80712613) 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, 8003 + ... + 15015.

It is an arithmetic number, because the mean of its divisors is an integer number (10699857).

Almost surely, 2^80712617 is an apocalyptic number.

It is an amenable number.

80712617 is a deficient number, since it is larger than the sum of its proper divisors (4886239).

80712617 is a wasteful number, since it uses less digits than its factorization.

80712617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7707.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 80712617 is about 8984.0200912509. The cubic root of 80712617 is about 432.1625634903.

Subtracting from 80712617 its reverse (71621708), we obtain a palindrome (9090909).

The spelling of 80712617 in words is "eighty million, seven hundred twelve thousand, six hundred seventeen".