85690207 has 2 divisors, whose sum is σ = 85690208. Its totient is φ = 85690206.

The previous prime is 85690193. The next prime is 85690211. The reversal of 85690207 is 70209658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85690207 - 2⁷ = 85690079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85690237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42845103 + 42845104.

It is an arithmetic number, because the mean of its divisors is an integer number (42845104).

Almost surely, 2^85690207 is an apocalyptic number.

85690207 is a deficient number, since it is larger than the sum of its proper divisors (1).

85690207 is an equidigital number, since it uses as much as digits as its factorization.

85690207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 85690207 is about 9256.9005071892. The cubic root of 85690207 is about 440.8698477677.

The spelling of 85690207 in words is "eighty-five million, six hundred ninety thousand, two hundred seven".