80704513 has 2 divisors, whose sum is σ = 80704514. Its totient is φ = 80704512.

The previous prime is 80704453. The next prime is 80704537. The reversal of 80704513 is 31540708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73564929 + 7139584 = 8577^2 + 2672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80704513 is a prime.

It is not a weakly prime, because it can be changed into another prime (80704553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40352256 + 40352257.

It is an arithmetic number, because the mean of its divisors is an integer number (40352257).

Almost surely, 2^80704513 is an apocalyptic number.

It is an amenable number.

80704513 is a deficient number, since it is larger than the sum of its proper divisors (1).

80704513 is an equidigital number, since it uses as much as digits as its factorization.

80704513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 80704513 is about 8983.5690568949. The cubic root of 80704513 is about 432.1480991568.

The spelling of 80704513 in words is "eighty million, seven hundred four thousand, five hundred thirteen".