85653397 has 2 divisors, whose sum is σ = 85653398. Its totient is φ = 85653396.

The previous prime is 85653331. The next prime is 85653401. The reversal of 85653397 is 79335658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 9771876 = 8711^2 + 3126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85653397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85654397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42826698 + 42826699.

It is an arithmetic number, because the mean of its divisors is an integer number (42826699).

Almost surely, 2^85653397 is an apocalyptic number.

It is an amenable number.

85653397 is a deficient number, since it is larger than the sum of its proper divisors (1).

85653397 is an equidigital number, since it uses as much as digits as its factorization.

85653397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 85653397 is about 9254.9120471239. The cubic root of 85653397 is about 440.8067104736.

The spelling of 85653397 in words is "eighty-five million, six hundred fifty-three thousand, three hundred ninety-seven".