81084003 has 96 divisors (see below), whose sum is σ = 152911872. Its totient is φ = 37065600.

The previous prime is 81083987. The next prime is 81084037. The reversal of 81084003 is 30048018.

It is not a de Polignac number, because 81084003 - 2⁴ = 81083987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81084053) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1210176 + ... + 1210242.

It is an arithmetic number, because the mean of its divisors is an integer number (1592832).

Almost surely, 2^81084003 is an apocalyptic number.

81084003 is a deficient number, since it is larger than the sum of its proper divisors (71827869).

81084003 is a wasteful number, since it uses less digits than its factorization.

81084003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 81084003 is about 9004.6656239974. The cubic root of 81084003 is about 432.8243913800.

The spelling of 81084003 in words is "eighty-one million, eighty-four thousand, three".