80840835 has 40 divisors (see below), whose sum is σ = 149933520. Its totient is φ = 41622336.

The previous prime is 80840833. The next prime is 80840861. The reversal of 80840835 is 53804808.

It is not a de Polignac number, because 80840835 - 2¹ = 80840833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80840835.

It is not an unprimeable number, because it can be changed into a prime (80840833) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8304 + ... + 15186.

It is an arithmetic number, because the mean of its divisors is an integer number (3748338).

Almost surely, 2^80840835 is an apocalyptic number.

80840835 is a deficient number, since it is larger than the sum of its proper divisors (69092685).

80840835 is a wasteful number, since it uses less digits than its factorization.

80840835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6929 (or 6920 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 80840835 is about 8991.1531518488. The cubic root of 80840835 is about 432.3912832204.

The spelling of 80840835 in words is "eighty million, eight hundred forty thousand, eight hundred thirty-five".