80840066 has 16 divisors (see below), whose sum is σ = 128565144. Its totient is φ = 37991424.

The previous prime is 80840051. The next prime is 80840107. The reversal of 80840066 is 66004808.

It can be written as a sum of positive squares in 4 ways, for example, as 79727041 + 1113025 = 8929^2 + 1055^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39566 + ... + 41558.

Almost surely, 2^80840066 is an apocalyptic number.

80840066 is a deficient number, since it is larger than the sum of its proper divisors (47725078).

80840066 is a wasteful number, since it uses less digits than its factorization.

80840066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 80840066 is about 8991.1103874883. The cubic root of 80840066 is about 432.3899121726.

The spelling of 80840066 in words is "eighty million, eight hundred forty thousand, sixty-six".