80840635 has 16 divisors (see below), whose sum is σ = 99307296. Its totient is φ = 63152128.

The previous prime is 80840623. The next prime is 80840647. The reversal of 80840635 is 53604808.

It is an interprime number because it is at equal distance from previous prime (80840623) and next prime (80840647).

It is a cyclic number.

It is not a de Polignac number, because 80840635 - 2²⁵ = 47286203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80840635.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67512 + ... + 68698.

It is an arithmetic number, because the mean of its divisors is an integer number (6206706).

Almost surely, 2^80840635 is an apocalyptic number.

80840635 is a deficient number, since it is larger than the sum of its proper divisors (18466661).

80840635 is a wasteful number, since it uses less digits than its factorization.

80840635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 80840635 is about 8991.1420297980. The cubic root of 80840635 is about 432.3909266418.

The spelling of 80840635 in words is "eighty million, eight hundred forty thousand, six hundred thirty-five".