80556746 has 8 divisors (see below), whose sum is σ = 120877860. Its totient is φ = 40264128.

The previous prime is 80556739. The next prime is 80556779. The reversal of 80556746 is 64765508.

It can be written as a sum of positive squares in 2 ways, for example, as 79477225 + 1079521 = 8915^2 + 1039^2 .

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

It is a super-2 number, since 2×80556746² = 12978778652217032, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2600 + ... + 12956.

Almost surely, 2^80556746 is an apocalyptic number.

80556746 is a deficient number, since it is larger than the sum of its proper divisors (40321114).

80556746 is a wasteful number, since it uses less digits than its factorization.

80556746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14248.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 80556746 is about 8975.3409963076. The cubic root of 80556746 is about 431.8841889206.

The spelling of 80556746 in words is "eighty million, five hundred fifty-six thousand, seven hundred forty-six".