80680869 has 6 divisors (see below), whose sum is σ = 116539046. Its totient is φ = 53787240.

The previous prime is 80680867. The next prime is 80680877. The reversal of 80680869 is 96808608.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 1292769 = 8910^2 + 1137^2 .

It is not a de Polignac number, because 80680869 - 2¹ = 80680867 is a prime.

It is a super-2 number, since 2×80680869² = 13018805245190322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80680867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4482262 + ... + 4482279.

Almost surely, 2^80680869 is an apocalyptic number.

It is an amenable number.

80680869 is a deficient number, since it is larger than the sum of its proper divisors (35858177).

80680869 is a wasteful number, since it uses less digits than its factorization.

80680869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8964547 (or 8964544 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 80680869 is about 8982.2530024488. The cubic root of 80680869 is about 432.1058928940.

The spelling of 80680869 in words is "eighty million, six hundred eighty thousand, eight hundred sixty-nine".