80956743 has 8 divisors (see below), whose sum is σ = 123362688. Its totient is φ = 46260984.

The previous prime is 80956727. The next prime is 80956753. The reversal of 80956743 is 34765908.

It is a happy number.

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

It is not a de Polignac number, because 80956743 - 2⁴ = 80956727 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 80956695 and 80956704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80956723) 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, 1927521 + ... + 1927562.

It is an arithmetic number, because the mean of its divisors is an integer number (15420336).

Almost surely, 2^80956743 is an apocalyptic number.

80956743 is a deficient number, since it is larger than the sum of its proper divisors (42405945).

80956743 is a wasteful number, since it uses less digits than its factorization.

80956743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855093.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 80956743 is about 8997.5965124026. The cubic root of 80956743 is about 432.5978359087.

The spelling of 80956743 in words is "eighty million, nine hundred fifty-six thousand, seven hundred forty-three".