80836321 has 6 divisors (see below), whose sum is σ = 81239270. Its totient is φ = 80435328.

The previous prime is 80836291. The next prime is 80836351. The reversal of 80836321 is 12363808.

It is an interprime number because it is at equal distance from previous prime (80836291) and next prime (80836351).

It can be written as a sum of positive squares in 3 ways, for example, as 483025 + 80353296 = 695^2 + 8964^2 .

It is not a de Polignac number, because 80836321 - 2²⁵ = 47281889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80836351) 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, 53545 + ... + 55033.

Almost surely, 2^80836321 is an apocalyptic number.

It is an amenable number.

80836321 is a deficient number, since it is larger than the sum of its proper divisors (402949).

80836321 is an equidigital number, since it uses as much as digits as its factorization.

80836321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80836321 is about 8990.9021238138. The cubic root of 80836321 is about 432.3832350989.

The spelling of 80836321 in words is "eighty million, eight hundred thirty-six thousand, three hundred twenty-one".