80659975 has 24 divisors (see below), whose sum is σ = 109992960. Its totient is φ = 58188000.

The previous prime is 80659973. The next prime is 80659979. The reversal of 80659975 is 57995608.

It is not a de Polignac number, because 80659975 - 2¹ = 80659973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80659973) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 34906 + ... + 37144.

It is an arithmetic number, because the mean of its divisors is an integer number (4583040).

Almost surely, 2^80659975 is an apocalyptic number.

80659975 is a deficient number, since it is larger than the sum of its proper divisors (29332985).

80659975 is a wasteful number, since it uses less digits than its factorization.

80659975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 80659975 is about 8981.0898559139. The cubic root of 80659975 is about 432.0685887181.

The spelling of 80659975 in words is "eighty million, six hundred fifty-nine thousand, nine hundred seventy-five".