80782001 has 4 divisors (see below), whose sum is σ = 83387904. Its totient is φ = 78176100.

The previous prime is 80781997. The next prime is 80782021. The reversal of 80782001 is 10028708.

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 80782001 - 2² = 80781997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80782021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302905 + ... + 1302966.

It is an arithmetic number, because the mean of its divisors is an integer number (20846976).

Almost surely, 2^80782001 is an apocalyptic number.

It is an amenable number.

80782001 is a deficient number, since it is larger than the sum of its proper divisors (2605903).

80782001 is a wasteful number, since it uses less digits than its factorization.

80782001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605902.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 80782001 is about 8987.8807847011. The cubic root of 80782001 is about 432.2863631322.

The spelling of 80782001 in words is "eighty million, seven hundred eighty-two thousand, one".