80172965 has 8 divisors (see below), whose sum is σ = 99525240. Its totient is φ = 61926592.

The previous prime is 80172943. The next prime is 80172973. The reversal of 80172965 is 56927108.

It can be written as a sum of positive squares in 4 ways, for example, as 23049601 + 57123364 = 4801^2 + 7558^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 80172965 - 2¹⁶ = 80107429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276314 + ... + 276603.

It is an arithmetic number, because the mean of its divisors is an integer number (12440655).

Almost surely, 2^80172965 is an apocalyptic number.

It is an amenable number.

80172965 is a deficient number, since it is larger than the sum of its proper divisors (19352275).

80172965 is a wasteful number, since it uses less digits than its factorization.

80172965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552951.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 80172965 is about 8953.9357268187. The cubic root of 80172965 is about 431.1972493064.

The spelling of 80172965 in words is "eighty million, one hundred seventy-two thousand, nine hundred sixty-five".