85851707 has 2 divisors, whose sum is σ = 85851708. Its totient is φ = 85851706.

The previous prime is 85851673. The next prime is 85851713. The reversal of 85851707 is 70715858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85851707 - 2⁶ = 85851643 is a prime.

It is not a weakly prime, because it can be changed into another prime (85851737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42925853 + 42925854.

It is an arithmetic number, because the mean of its divisors is an integer number (42925854).

Almost surely, 2^85851707 is an apocalyptic number.

85851707 is a deficient number, since it is larger than the sum of its proper divisors (1).

85851707 is an equidigital number, since it uses as much as digits as its factorization.

85851707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 85851707 is about 9265.6196231013. The cubic root of 85851707 is about 441.1466425118.

The spelling of 85851707 in words is "eighty-five million, eight hundred fifty-one thousand, seven hundred seven".