80601985 has 4 divisors (see below), whose sum is σ = 96722388. Its totient is φ = 64481584.

The previous prime is 80601949. The next prime is 80602003. The reversal of 80601985 is 58910608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59954049 + 20647936 = 7743^2 + 4544^2 .

It is a cyclic number.

It is not a de Polignac number, because 80601985 - 2⁹ = 80601473 is a prime.

It is a Duffinian number.

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, 8060194 + ... + 8060203.

It is an arithmetic number, because the mean of its divisors is an integer number (24180597).

Almost surely, 2^80601985 is an apocalyptic number.

It is an amenable number.

80601985 is a deficient number, since it is larger than the sum of its proper divisors (16120403).

80601985 is a wasteful number, since it uses less digits than its factorization.

80601985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16120402.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 80601985 is about 8977.8608253860. The cubic root of 80601985 is about 431.9650195298.

The spelling of 80601985 in words is "eighty million, six hundred one thousand, nine hundred eighty-five".