81836703 has 32 divisors (see below), whose sum is σ = 131846400. Its totient is φ = 49867488.

The previous prime is 81836687. The next prime is 81836731. The reversal of 81836703 is 30763818.

It is not a de Polignac number, because 81836703 - 2⁴ = 81836687 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81836773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36468 + ... + 38646.

It is an arithmetic number, because the mean of its divisors is an integer number (4120200).

Almost surely, 2^81836703 is an apocalyptic number.

81836703 is a deficient number, since it is larger than the sum of its proper divisors (50009697).

81836703 is a wasteful number, since it uses less digits than its factorization.

81836703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 81836703 is about 9046.3640762463. The cubic root of 81836703 is about 434.1595663622.

The spelling of 81836703 in words is "eighty-one million, eight hundred thirty-six thousand, seven hundred three".