80564081 has 8 divisors (see below), whose sum is σ = 88399080. Its totient is φ = 72963072.

The previous prime is 80564053. The next prime is 80564089. The reversal of 80564081 is 18046508.

It can be written as a sum of positive squares in 4 ways, for example, as 12666481 + 67897600 = 3559^2 + 8240^2 .

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

It is not a de Polignac number, because 80564081 - 2⁶ = 80564017 is a prime.

It is a super-2 number, since 2×80564081² = 12981142294749122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80564089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57776 + ... + 59153.

It is an arithmetic number, because the mean of its divisors is an integer number (11049885).

Almost surely, 2^80564081 is an apocalyptic number.

It is an amenable number.

80564081 is a deficient number, since it is larger than the sum of its proper divisors (7834999).

80564081 is a wasteful number, since it uses less digits than its factorization.

80564081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116995.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 80564081 is about 8975.7496065788. The cubic root of 80564081 is about 431.8972967588.

The spelling of 80564081 in words is "eighty million, five hundred sixty-four thousand, eighty-one".