80917643 has 8 divisors (see below), whose sum is σ = 82362240. Its totient is φ = 79485120.

The previous prime is 80917633. The next prime is 80917649. The reversal of 80917643 is 34671908.

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 80917643 - 2⁸ = 80917387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80917597 and 80917606.

It is not an unprimeable number, because it can be changed into a prime (80917649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11078 + ... + 16868.

It is an arithmetic number, because the mean of its divisors is an integer number (10295280).

Almost surely, 2^80917643 is an apocalyptic number.

80917643 is a deficient number, since it is larger than the sum of its proper divisors (1444597).

80917643 is a wasteful number, since it uses less digits than its factorization.

80917643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 80917643 is about 8995.4234475093. The cubic root of 80917643 is about 432.5281801946.

The spelling of 80917643 in words is "eighty million, nine hundred seventeen thousand, six hundred forty-three".