81300741 has 16 divisors (see below), whose sum is σ = 112057344. Its totient is φ = 52400624.

The previous prime is 81300733. The next prime is 81300743. The reversal of 81300741 is 14700318.

It is a cyclic number.

It is not a de Polignac number, because 81300741 - 2³ = 81300733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81300743) 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 15 ways as a sum of consecutive naturals, for example, 8230 + ... + 15176.

It is an arithmetic number, because the mean of its divisors is an integer number (7003584).

Almost surely, 2^81300741 is an apocalyptic number.

It is an amenable number.

81300741 is a deficient number, since it is larger than the sum of its proper divisors (30756603).

81300741 is a wasteful number, since it uses less digits than its factorization.

81300741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 81300741 is about 9016.6923536295. The cubic root of 81300741 is about 433.2096956280.

The spelling of 81300741 in words is "eighty-one million, three hundred thousand, seven hundred forty-one".