81017466 has 8 divisors (see below), whose sum is σ = 162034944. Its totient is φ = 27005820.

The previous prime is 81017449. The next prime is 81017467. The reversal of 81017466 is 66471018.

It is a happy number.

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

81017466 is an admirable number.

It is a super-2 number, since 2×81017466² = 13127659594122312, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81017467) 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, 6751450 + ... + 6751461.

It is an arithmetic number, because the mean of its divisors is an integer number (20254368).

Almost surely, 2^81017466 is an apocalyptic number.

81017466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81017466 is a wasteful number, since it uses less digits than its factorization.

81017466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502916.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 81017466 is about 9000.9702810308. The cubic root of 81017466 is about 432.7059680313.

The spelling of 81017466 in words is "eighty-one million, seventeen thousand, four hundred sixty-six".