76585813 has 2 divisors, whose sum is σ = 76585814. Its totient is φ = 76585812.

The previous prime is 76585811. The next prime is 76585871. The reversal of 76585813 is 31858567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69605649 + 6980164 = 8343^2 + 2642^2 .

It is a cyclic number.

It is not a de Polignac number, because 76585813 - 2¹ = 76585811 is a prime.

Together with 76585811, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 76585813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76585811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38292906 + 38292907.

It is an arithmetic number, because the mean of its divisors is an integer number (38292907).

Almost surely, 2^76585813 is an apocalyptic number.

It is an amenable number.

76585813 is a deficient number, since it is larger than the sum of its proper divisors (1).

76585813 is an equidigital number, since it uses as much as digits as its factorization.

76585813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 76585813 is about 8751.3320700337. The cubic root of 76585813 is about 424.6679075853.

The spelling of 76585813 in words is "seventy-six million, five hundred eighty-five thousand, eight hundred thirteen".