80971803 has 12 divisors (see below), whose sum is σ = 127592088. Its totient is φ = 49073760.

The previous prime is 80971789. The next prime is 80971811. The reversal of 80971803 is 30817908.

It is not a de Polignac number, because 80971803 - 2⁶ = 80971739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80971823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408850 + ... + 409047.

It is an arithmetic number, because the mean of its divisors is an integer number (10632674).

Almost surely, 2^80971803 is an apocalyptic number.

80971803 is a deficient number, since it is larger than the sum of its proper divisors (46620285).

80971803 is a wasteful number, since it uses less digits than its factorization.

80971803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817914 (or 817911 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 80971803 is about 8998.4333636473. The cubic root of 80971803 is about 432.6246589553.

The spelling of 80971803 in words is "eighty million, nine hundred seventy-one thousand, eight hundred three".