81796503 has 8 divisors (see below), whose sum is σ = 115477488. Its totient is φ = 51323264.

The previous prime is 81796493. The next prime is 81796553. The reversal of 81796503 is 30569718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81796503 - 2⁶ = 81796439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81796553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801876 + ... + 801977.

It is an arithmetic number, because the mean of its divisors is an integer number (14434686).

Almost surely, 2^81796503 is an apocalyptic number.

81796503 is a deficient number, since it is larger than the sum of its proper divisors (33680985).

81796503 is a wasteful number, since it uses less digits than its factorization.

81796503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603873.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 81796503 is about 9044.1419161798. The cubic root of 81796503 is about 434.0884651223.

The spelling of 81796503 in words is "eighty-one million, seven hundred ninety-six thousand, five hundred three".