80823641 has 4 divisors (see below), whose sum is σ = 82030032. Its totient is φ = 79617252.

The previous prime is 80823637. The next prime is 80823643. The reversal of 80823641 is 14632808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80823641 - 2² = 80823637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80823598 and 80823607.

It is not an unprimeable number, because it can be changed into a prime (80823643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603095 + ... + 603228.

It is an arithmetic number, because the mean of its divisors is an integer number (20507508).

Almost surely, 2^80823641 is an apocalyptic number.

It is an amenable number.

80823641 is a deficient number, since it is larger than the sum of its proper divisors (1206391).

80823641 is a wasteful number, since it uses less digits than its factorization.

80823641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206390.

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

The square root of 80823641 is about 8990.1969388885. The cubic root of 80823641 is about 432.3606260125.

The spelling of 80823641 in words is "eighty million, eight hundred twenty-three thousand, six hundred forty-one".