80747321 has 8 divisors (see below), whose sum is σ = 85096320. Its totient is φ = 76408272.

The previous prime is 80747299. The next prime is 80747333. The reversal of 80747321 is 12374708.

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 80747321 - 2¹⁸ = 80485177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80747921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19031 + ... + 22883.

It is an arithmetic number, because the mean of its divisors is an integer number (10637040).

Almost surely, 2^80747321 is an apocalyptic number.

It is an amenable number.

80747321 is a deficient number, since it is larger than the sum of its proper divisors (4348999).

80747321 is a wasteful number, since it uses less digits than its factorization.

80747321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 80747321 is about 8985.9513130219. The cubic root of 80747321 is about 432.2244935873.

The spelling of 80747321 in words is "eighty million, seven hundred forty-seven thousand, three hundred twenty-one".