81479066 has 8 divisors (see below), whose sum is σ = 125061024. Its totient is φ = 39792060.

The previous prime is 81479063. The next prime is 81479081. The reversal of 81479066 is 66097418.

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

It is not an unprimeable number, because it can be changed into a prime (81479063) 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, 473630 + ... + 473801.

It is an arithmetic number, because the mean of its divisors is an integer number (15632628).

Almost surely, 2^81479066 is an apocalyptic number.

81479066 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

81479066 is a deficient number, since it is larger than the sum of its proper divisors (43581958).

81479066 is a wasteful number, since it uses less digits than its factorization.

81479066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947476.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 81479066 is about 9026.5755411452. The cubic root of 81479066 is about 433.5261983034.

The spelling of 81479066 in words is "eighty-one million, four hundred seventy-nine thousand, sixty-six".