81746504 has 64 divisors (see below), whose sum is σ = 184704000. Its totient is φ = 33904080.

The previous prime is 81746491. The next prime is 81746507. The reversal of 81746504 is 40564718.

The cubic root of 81746504 is 434.

It is a perfect power (a cube), and thus also a powerful number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81746507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2636969 + ... + 2636999.

It is an arithmetic number, because the mean of its divisors is an integer number (2886000).

Almost surely, 2^81746504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81746504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92352000).

81746504 is an abundant number, since it is smaller than the sum of its proper divisors (102957496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81746504 is an frugal number, since it uses more digits than its factorization.

81746504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 81746504 is about 9041.3773287039.

The spelling of 81746504 in words is "eighty-one million, seven hundred forty-six thousand, five hundred four".