85637077 has 2 divisors, whose sum is σ = 85637078. Its totient is φ = 85637076.

The previous prime is 85637023. The next prime is 85637089. The reversal of 85637077 is 77073658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74407876 + 11229201 = 8626^2 + 3351^2 .

It is a cyclic number.

It is not a de Polignac number, because 85637077 - 2⁷ = 85636949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85637477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42818538 + 42818539.

It is an arithmetic number, because the mean of its divisors is an integer number (42818539).

Almost surely, 2^85637077 is an apocalyptic number.

It is an amenable number.

85637077 is a deficient number, since it is larger than the sum of its proper divisors (1).

85637077 is an equidigital number, since it uses as much as digits as its factorization.

85637077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 85637077 is about 9254.0303111671. The cubic root of 85637077 is about 440.7787122749.

The spelling of 85637077 in words is "eighty-five million, six hundred thirty-seven thousand, seventy-seven".