85104637 has 2 divisors, whose sum is σ = 85104638. Its totient is φ = 85104636.

The previous prime is 85104583. The next prime is 85104653. The reversal of 85104637 is 73640158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 41293476 = 6619^2 + 6426^2 .

It is a cyclic number.

It is not a de Polignac number, because 85104637 - 2¹⁵ = 85071869 is a prime.

It is equal to p_4949422 and since 85104637 and 4949422 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85104037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42552318 + 42552319.

It is an arithmetic number, because the mean of its divisors is an integer number (42552319).

Almost surely, 2^85104637 is an apocalyptic number.

It is an amenable number.

85104637 is a deficient number, since it is larger than the sum of its proper divisors (1).

85104637 is an equidigital number, since it uses as much as digits as its factorization.

85104637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 85104637 is about 9225.2174500117. The cubic root of 85104637 is about 439.8633132587.

The spelling of 85104637 in words is "eighty-five million, one hundred four thousand, six hundred thirty-seven".