80989775 has 6 divisors (see below), whose sum is σ = 100427352. Its totient is φ = 64791800.

The previous prime is 80989759. The next prime is 80989807. The reversal of 80989775 is 57798908.

It is not a de Polignac number, because 80989775 - 2⁴ = 80989759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1619771 + ... + 1619820.

It is an arithmetic number, because the mean of its divisors is an integer number (16737892).

Almost surely, 2^80989775 is an apocalyptic number.

80989775 is a deficient number, since it is larger than the sum of its proper divisors (19437577).

80989775 is a wasteful number, since it uses less digits than its factorization.

80989775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239601 (or 3239596 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 80989775 is about 8999.4319265163. The cubic root of 80989775 is about 432.6566641510.

The spelling of 80989775 in words is "eighty million, nine hundred eighty-nine thousand, seven hundred seventy-five".