80971746 has 32 divisors (see below), whose sum is σ = 165096960. Its totient is φ = 26469504.

The previous prime is 80971739. The next prime is 80971769. The reversal of 80971746 is 64717908.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80971698 and 80971707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97260 + ... + 98088.

It is an arithmetic number, because the mean of its divisors is an integer number (5159280).

Almost surely, 2^80971746 is an apocalyptic number.

80971746 is an abundant number, since it is smaller than the sum of its proper divisors (84125214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80971746 is a wasteful number, since it uses less digits than its factorization.

80971746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 80971746 is about 8998.4301964287. The cubic root of 80971746 is about 432.6245574400.

The spelling of 80971746 in words is "eighty million, nine hundred seventy-one thousand, seven hundred forty-six".