80715566 has 8 divisors (see below), whose sum is σ = 123058344. Its totient is φ = 39696120.

The previous prime is 80715529. The next prime is 80715571. The reversal of 80715566 is 66551708.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330680 + ... + 330923.

It is an arithmetic number, because the mean of its divisors is an integer number (15382293).

Almost surely, 2^80715566 is an apocalyptic number.

80715566 is a deficient number, since it is larger than the sum of its proper divisors (42342778).

80715566 is a wasteful number, since it uses less digits than its factorization.

80715566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661666.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 80715566 is about 8984.1842144960. The cubic root of 80715566 is about 432.1678267396.

The spelling of 80715566 in words is "eighty million, seven hundred fifteen thousand, five hundred sixty-six".