85797737 has 2 divisors, whose sum is σ = 85797738. Its totient is φ = 85797736.

The previous prime is 85797727. The next prime is 85797763. The reversal of 85797737 is 73779758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78074896 + 7722841 = 8836^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 85797737 - 2²² = 81603433 is a prime.

It is a super-2 number, since 2×85797737² = 14722503348642338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85797727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42898868 + 42898869.

It is an arithmetic number, because the mean of its divisors is an integer number (42898869).

Almost surely, 2^85797737 is an apocalyptic number.

It is an amenable number.

85797737 is a deficient number, since it is larger than the sum of its proper divisors (1).

85797737 is an equidigital number, since it uses as much as digits as its factorization.

85797737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2593080, while the sum is 53.

The square root of 85797737 is about 9262.7067858159. The cubic root of 85797737 is about 441.0541820125.

The spelling of 85797737 in words is "eighty-five million, seven hundred ninety-seven thousand, seven hundred thirty-seven".