85974787 has 2 divisors, whose sum is σ = 85974788. Its totient is φ = 85974786.

The previous prime is 85974743. The next prime is 85974793. The reversal of 85974787 is 78747958.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85974787 - 2¹⁵ = 85942019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85974727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42987393 + 42987394.

It is an arithmetic number, because the mean of its divisors is an integer number (42987394).

Almost surely, 2^85974787 is an apocalyptic number.

85974787 is a deficient number, since it is larger than the sum of its proper divisors (1).

85974787 is an equidigital number, since it uses as much as digits as its factorization.

85974787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 55.

The square root of 85974787 is about 9272.2590019908. The cubic root of 85974787 is about 441.3573562501.

It can be divided in two parts, 8 and 5974787, that added together give a palindrome (5974795).

The spelling of 85974787 in words is "eighty-five million, nine hundred seventy-four thousand, seven hundred eighty-seven".