868197053 has 2 divisors, whose sum is σ = 868197054. Its totient is φ = 868197052.

The previous prime is 868197049. The next prime is 868197059. The reversal of 868197053 is 350791868.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574177444 + 294019609 = 23962^2 + 17147^2 .

It is a cyclic number.

It is not a de Polignac number, because 868197053 - 2² = 868197049 is a prime.

It is a super-2 number, since 2×868197053² = 1507532245675769618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 868196989 and 868197007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868197059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434098526 + 434098527.

It is an arithmetic number, because the mean of its divisors is an integer number (434098527).

Almost surely, 2^868197053 is an apocalyptic number.

It is an amenable number.

868197053 is a deficient number, since it is larger than the sum of its proper divisors (1).

868197053 is an equidigital number, since it uses as much as digits as its factorization.

868197053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 868197053 is about 29465.1837428515. The cubic root of 868197053 is about 953.9803643699.

The spelling of 868197053 in words is "eight hundred sixty-eight million, one hundred ninety-seven thousand, fifty-three".