80881997 has 12 divisors (see below), whose sum is σ = 94545216. Its totient is φ = 68990040.

The previous prime is 80881991. The next prime is 80882003. The reversal of 80881997 is 79918808.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80881991) and next prime (80882003).

It is not a de Polignac number, because 80881997 - 2¹⁰ = 80880973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80881991) 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, 6428 + ... + 14250.

It is an arithmetic number, because the mean of its divisors is an integer number (7878768).

Almost surely, 2^80881997 is an apocalyptic number.

It is an amenable number.

80881997 is a deficient number, since it is larger than the sum of its proper divisors (13663219).

80881997 is a wasteful number, since it uses less digits than its factorization.

80881997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8048 (or 8041 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 80881997 is about 8993.4418883985. The cubic root of 80881997 is about 432.4646581432.

The spelling of 80881997 in words is "eighty million, eight hundred eighty-one thousand, nine hundred ninety-seven".