81014756 has 12 divisors (see below), whose sum is σ = 145607868. Its totient is φ = 39412512.

The previous prime is 81014663. The next prime is 81014767. The reversal of 81014756 is 65741018.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69222400 + 11792356 = 8320^2 + 3434^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273551 + ... + 273846.

It is an arithmetic number, because the mean of its divisors is an integer number (12133989).

Almost surely, 2^81014756 is an apocalyptic number.

It is an amenable number.

81014756 is a deficient number, since it is larger than the sum of its proper divisors (64593112).

81014756 is a wasteful number, since it uses less digits than its factorization.

81014756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547438 (or 547436 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 81014756 is about 9000.8197404459. The cubic root of 81014756 is about 432.7011433669.

The spelling of 81014756 in words is "eighty-one million, fourteen thousand, seven hundred fifty-six".