80782723 has 12 divisors (see below), whose sum is σ = 94322232. Its totient is φ = 68984160.

The previous prime is 80782687. The next prime is 80782783. The reversal of 80782723 is 32728708.

It is a de Polignac number, because none of the positive numbers 2^k-80782723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80782783) 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 11 ways as a sum of consecutive naturals, for example, 10836 + ... + 16702.

It is an arithmetic number, because the mean of its divisors is an integer number (7860186).

Almost surely, 2^80782723 is an apocalyptic number.

80782723 is a deficient number, since it is larger than the sum of its proper divisors (13539509).

80782723 is a wasteful number, since it uses less digits than its factorization.

80782723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162 (or 6155 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 80782723 is about 8987.9209498081. The cubic root of 80782723 is about 432.2876510008.

It can be divided in two parts, 8078 and 2723, that added together give a palindrome (10801).

The spelling of 80782723 in words is "eighty million, seven hundred eighty-two thousand, seven hundred twenty-three".