80289665 has 8 divisors (see below), whose sum is σ = 100536768. Its totient is φ = 61438960.

The previous prime is 80289653. The next prime is 80289679. The reversal of 80289665 is 56698208.

It is a happy number.

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

It is not a de Polignac number, because 80289665 - 2⁸ = 80289409 is a prime.

It is a Duffinian 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, 348971 + ... + 349200.

It is an arithmetic number, because the mean of its divisors is an integer number (12567096).

Almost surely, 2^80289665 is an apocalyptic number.

It is an amenable number.

80289665 is a deficient number, since it is larger than the sum of its proper divisors (20247103).

80289665 is a wasteful number, since it uses less digits than its factorization.

80289665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698199.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 80289665 is about 8960.4500445011. The cubic root of 80289665 is about 431.4063651975.

The spelling of 80289665 in words is "eighty million, two hundred eighty-nine thousand, six hundred sixty-five".