85628897 has 2 divisors, whose sum is σ = 85628898. Its totient is φ = 85628896.

The previous prime is 85628863. The next prime is 85628903. The reversal of 85628897 is 79882658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62742241 + 22886656 = 7921^2 + 4784^2 .

It is a cyclic number.

It is not a de Polignac number, because 85628897 - 2⁶ = 85628833 is a prime.

It is not a weakly prime, because it can be changed into another prime (85628827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42814448 + 42814449.

It is an arithmetic number, because the mean of its divisors is an integer number (42814449).

Almost surely, 2^85628897 is an apocalyptic number.

It is an amenable number.

85628897 is a deficient number, since it is larger than the sum of its proper divisors (1).

85628897 is an equidigital number, since it uses as much as digits as its factorization.

85628897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 53.

The square root of 85628897 is about 9253.5883310206. The cubic root of 85628897 is about 440.7646775258.

The spelling of 85628897 in words is "eighty-five million, six hundred twenty-eight thousand, eight hundred ninety-seven".