80579965 has 8 divisors (see below), whose sum is σ = 99054648. Its totient is φ = 62891520.

The previous prime is 80579957. The next prime is 80579987. The reversal of 80579965 is 56997508.

It can be written as a sum of positive squares in 4 ways, for example, as 2752281 + 77827684 = 1659^2 + 8822^2 .

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

It is not a de Polignac number, because 80579965 - 2³ = 80579957 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 7 ways as a sum of consecutive naturals, for example, 196332 + ... + 196741.

It is an arithmetic number, because the mean of its divisors is an integer number (12381831).

Almost surely, 2^80579965 is an apocalyptic number.

It is an amenable number.

80579965 is a deficient number, since it is larger than the sum of its proper divisors (18474683).

80579965 is a wasteful number, since it uses less digits than its factorization.

80579965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393119.

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

The square root of 80579965 is about 8976.6343915746. The cubic root of 80579965 is about 431.9256791585.

The spelling of 80579965 in words is "eighty million, five hundred seventy-nine thousand, nine hundred sixty-five".