80661275 has 12 divisors (see below), whose sum is σ = 100139424. Its totient is φ = 64452000.

The previous prime is 80661263. The next prime is 80661293. The reversal of 80661275 is 57216608.

It is not a de Polignac number, because 80661275 - 2⁶ = 80661211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29465 + ... + 32085.

It is an arithmetic number, because the mean of its divisors is an integer number (8344952).

Almost surely, 2^80661275 is an apocalyptic number.

80661275 is a deficient number, since it is larger than the sum of its proper divisors (19478149).

80661275 is a wasteful number, since it uses less digits than its factorization.

80661275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 80661275 is about 8981.1622299121. The cubic root of 80661275 is about 432.0709099278.

The spelling of 80661275 in words is "eighty million, six hundred sixty-one thousand, two hundred seventy-five".