85920787 has 2 divisors, whose sum is σ = 85920788. Its totient is φ = 85920786.

The previous prime is 85920773. The next prime is 85920797. The reversal of 85920787 is 78702958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85920787 - 2¹⁹ = 85396499 is a prime.

It is not a weakly prime, because it can be changed into another prime (85920767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42960393 + 42960394.

It is an arithmetic number, because the mean of its divisors is an integer number (42960394).

Almost surely, 2^85920787 is an apocalyptic number.

85920787 is a deficient number, since it is larger than the sum of its proper divisors (1).

85920787 is an equidigital number, since it uses as much as digits as its factorization.

85920787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 85920787 is about 9269.3466328539. The cubic root of 85920787 is about 441.2649326857.

The spelling of 85920787 in words is "eighty-five million, nine hundred twenty thousand, seven hundred eighty-seven".