81746326 has 8 divisors (see below), whose sum is σ = 122670720. Its totient is φ = 40856088.

The previous prime is 81746323. The next prime is 81746351. The reversal of 81746326 is 62364718.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81746321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341 + ... + 12856.

It is an arithmetic number, because the mean of its divisors is an integer number (15333840).

Almost surely, 2^81746326 is an apocalyptic number.

81746326 is a deficient number, since it is larger than the sum of its proper divisors (40924394).

81746326 is a wasteful number, since it uses less digits than its factorization.

81746326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17078.

The product of its digits is 48384, while the sum is 37.

The square root of 81746326 is about 9041.3674850655. The cubic root of 81746326 is about 433.9996849934. Note that the first 3 decimals are identical.

The spelling of 81746326 in words is "eighty-one million, seven hundred forty-six thousand, three hundred twenty-six".