85676749 has 2 divisors, whose sum is σ = 85676750. Its totient is φ = 85676748.

The previous prime is 85676743. The next prime is 85676783. The reversal of 85676749 is 94767658.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 22155849 = 7970^2 + 4707^2 .

It is a cyclic number.

It is not a de Polignac number, because 85676749 - 2¹⁹ = 85152461 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 85676696 and 85676705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85676743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42838374 + 42838375.

It is an arithmetic number, because the mean of its divisors is an integer number (42838375).

Almost surely, 2^85676749 is an apocalyptic number.

It is an amenable number.

85676749 is a deficient number, since it is larger than the sum of its proper divisors (1).

85676749 is an equidigital number, since it uses as much as digits as its factorization.

85676749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 52.

The square root of 85676749 is about 9256.1735614670. The cubic root of 85676749 is about 440.8467664174.

Subtracting 85676749 from its reverse (94767658), we obtain a palindrome (9090909).

The spelling of 85676749 in words is "eighty-five million, six hundred seventy-six thousand, seven hundred forty-nine".