80956745 has 16 divisors (see below), whose sum is σ = 99973632. Its totient is φ = 62899200.

The previous prime is 80956727. The next prime is 80956753. The reversal of 80956745 is 54765908.

It is not a de Polignac number, because 80956745 - 2¹² = 80952649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80956696 and 80956705.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 40520 + ... + 42470.

It is an arithmetic number, because the mean of its divisors is an integer number (6248352).

Almost surely, 2^80956745 is an apocalyptic number.

It is an amenable number.

80956745 is a deficient number, since it is larger than the sum of its proper divisors (19016887).

80956745 is a wasteful number, since it uses less digits than its factorization.

80956745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 80956745 is about 8997.5966235434. The cubic root of 80956745 is about 432.5978394710.

The spelling of 80956745 in words is "eighty million, nine hundred fifty-six thousand, seven hundred forty-five".