81410713 has 2 divisors, whose sum is σ = 81410714. Its totient is φ = 81410712.

The previous prime is 81410699. The next prime is 81410729. The reversal of 81410713 is 31701418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77580864 + 3829849 = 8808^2 + 1957^2 .

It is a cyclic number.

It is not a de Polignac number, because 81410713 - 2¹⁷ = 81279641 is a prime.

It is not a weakly prime, because it can be changed into another prime (81410753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40705356 + 40705357.

It is an arithmetic number, because the mean of its divisors is an integer number (40705357).

Almost surely, 2^81410713 is an apocalyptic number.

It is an amenable number.

81410713 is a deficient number, since it is larger than the sum of its proper divisors (1).

81410713 is an equidigital number, since it uses as much as digits as its factorization.

81410713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 81410713 is about 9022.7885379189. The cubic root of 81410713 is about 433.4049356368.

The spelling of 81410713 in words is "eighty-one million, four hundred ten thousand, seven hundred thirteen".