86897297 has 2 divisors, whose sum is σ = 86897298. Its totient is φ = 86897296.

The previous prime is 86897287. The next prime is 86897303. The reversal of 86897297 is 79279868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60590656 + 26306641 = 7784^2 + 5129^2 .

It is a cyclic number.

It is not a de Polignac number, because 86897297 - 2¹⁰ = 86896273 is a prime.

It is a super-2 number, since 2×86897297² = 15102280451812418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86897207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43448648 + 43448649.

It is an arithmetic number, because the mean of its divisors is an integer number (43448649).

Almost surely, 2^86897297 is an apocalyptic number.

It is an amenable number.

86897297 is a deficient number, since it is larger than the sum of its proper divisors (1).

86897297 is an equidigital number, since it uses as much as digits as its factorization.

86897297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 56.

The square root of 86897297 is about 9321.8719686552. The cubic root of 86897297 is about 442.9303326386.

The spelling of 86897297 in words is "eighty-six million, eight hundred ninety-seven thousand, two hundred ninety-seven".