385715677 has 2 divisors, whose sum is σ = 385715678. Its totient is φ = 385715676.

The previous prime is 385715663. The next prime is 385715731. The reversal of 385715677 is 776517583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298218361 + 87497316 = 17269^2 + 9354^2 .

It is an emirp because it is prime and its reverse (776517583) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385715677 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385715677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385715657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192857838 + 192857839.

It is an arithmetic number, because the mean of its divisors is an integer number (192857839).

Almost surely, 2^385715677 is an apocalyptic number.

It is an amenable number.

385715677 is a deficient number, since it is larger than the sum of its proper divisors (1).

385715677 is an equidigital number, since it uses as much as digits as its factorization.

385715677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1234800, while the sum is 49.

The square root of 385715677 is about 19639.6455416079. The cubic root of 385715677 is about 727.9291261811.

The spelling of 385715677 in words is "three hundred eighty-five million, seven hundred fifteen thousand, six hundred seventy-seven".