80750991 has 8 divisors (see below), whose sum is σ = 107940784. Its totient is φ = 53697600.

The previous prime is 80750941. The next prime is 80751049. The reversal of 80750991 is 19905708.

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 80750991 - 2⁹ = 80750479 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 (80750911) 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, 32710 + ... + 35091.

It is an arithmetic number, because the mean of its divisors is an integer number (13492598).

Almost surely, 2^80750991 is an apocalyptic number.

80750991 is a deficient number, since it is larger than the sum of its proper divisors (27189793).

80750991 is a wasteful number, since it uses less digits than its factorization.

80750991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68201.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 80750991 is about 8986.1555183515. The cubic root of 80750991 is about 432.2310417503.

The spelling of 80750991 in words is "eighty million, seven hundred fifty thousand, nine hundred ninety-one".