895681637 has 2 divisors, whose sum is σ = 895681638. Its totient is φ = 895681636.

The previous prime is 895681583. The next prime is 895681651. The reversal of 895681637 is 736186598.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838739521 + 56942116 = 28961^2 + 7546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-895681637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (895681937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447840818 + 447840819.

It is an arithmetic number, because the mean of its divisors is an integer number (447840819).

Almost surely, 2^895681637 is an apocalyptic number.

It is an amenable number.

895681637 is a deficient number, since it is larger than the sum of its proper divisors (1).

895681637 is an equidigital number, since it uses as much as digits as its factorization.

895681637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 895681637 is about 29927.9407410533. The cubic root of 895681637 is about 963.9427105782.

The spelling of 895681637 in words is "eight hundred ninety-five million, six hundred eighty-one thousand, six hundred thirty-seven".