80665011 has 16 divisors (see below), whose sum is σ = 136576000. Its totient is φ = 46094184.

The previous prime is 80665001. The next prime is 80665027. The reversal of 80665011 is 11056608.

80665011 is a `hidden beast` number, since 8 + 0 + 6 + 650 + 1 + 1 = 666.

It is not a de Polignac number, because 80665011 - 2¹³ = 80656819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80665001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213211 + ... + 213588.

It is an arithmetic number, because the mean of its divisors is an integer number (8536000).

Almost surely, 2^80665011 is an apocalyptic number.

80665011 is a deficient number, since it is larger than the sum of its proper divisors (55910989).

80665011 is a wasteful number, since it uses less digits than its factorization.

80665011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426815 (or 426809 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80665011 is about 8981.3702184021. The cubic root of 80665011 is about 432.0775805885.

The spelling of 80665011 in words is "eighty million, six hundred sixty-five thousand, eleven".