80623513 has 2 divisors, whose sum is σ = 80623514. Its totient is φ = 80623512.

The previous prime is 80623511. The next prime is 80623531. The reversal of 80623513 is 31532608.

Together with next prime (80623531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50296464 + 30327049 = 7092^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 80623513 - 2¹ = 80623511 is a prime.

It is a super-2 number, since 2×80623513² = 13000301696922338, which contains 22 as substring.

Together with 80623511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80623511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40311756 + 40311757.

It is an arithmetic number, because the mean of its divisors is an integer number (40311757).

Almost surely, 2^80623513 is an apocalyptic number.

It is an amenable number.

80623513 is a deficient number, since it is larger than the sum of its proper divisors (1).

80623513 is an equidigital number, since it uses as much as digits as its factorization.

80623513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 80623513 is about 8979.0596946451. The cubic root of 80623513 is about 432.0034739804.

The spelling of 80623513 in words is "eighty million, six hundred twenty-three thousand, five hundred thirteen".