85683149 has 2 divisors, whose sum is σ = 85683150. Its totient is φ = 85683148.

The previous prime is 85683131. The next prime is 85683161. The reversal of 85683149 is 94138658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73222249 + 12460900 = 8557^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 85683149 - 2⁸ = 85682893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85683109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42841574 + 42841575.

It is an arithmetic number, because the mean of its divisors is an integer number (42841575).

Almost surely, 2^85683149 is an apocalyptic number.

It is an amenable number.

85683149 is a deficient number, since it is larger than the sum of its proper divisors (1).

85683149 is an equidigital number, since it uses as much as digits as its factorization.

85683149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 85683149 is about 9256.5192702225. The cubic root of 85683149 is about 440.8577431374.

The spelling of 85683149 in words is "eighty-five million, six hundred eighty-three thousand, one hundred forty-nine".