85304669 has 2 divisors, whose sum is σ = 85304670. Its totient is φ = 85304668.

The previous prime is 85304663. The next prime is 85304693. The reversal of 85304669 is 96640358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58905625 + 26399044 = 7675^2 + 5138^2 .

It is a cyclic number.

It is not a de Polignac number, because 85304669 - 2²⁰ = 84256093 is a prime.

It is a super-2 number, since 2×85304669² = 14553773106399122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85304663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42652334 + 42652335.

It is an arithmetic number, because the mean of its divisors is an integer number (42652335).

Almost surely, 2^85304669 is an apocalyptic number.

It is an amenable number.

85304669 is a deficient number, since it is larger than the sum of its proper divisors (1).

85304669 is an equidigital number, since it uses as much as digits as its factorization.

85304669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 85304669 is about 9236.0526741677. The cubic root of 85304669 is about 440.2076654032.

The spelling of 85304669 in words is "eighty-five million, three hundred four thousand, six hundred sixty-nine".