897811207 has 2 divisors, whose sum is σ = 897811208. Its totient is φ = 897811206.

The previous prime is 897811177. The next prime is 897811231. The reversal of 897811207 is 702118798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897811207 - 2¹⁵ = 897778439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897811247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448905603 + 448905604.

It is an arithmetic number, because the mean of its divisors is an integer number (448905604).

Almost surely, 2^897811207 is an apocalyptic number.

897811207 is a deficient number, since it is larger than the sum of its proper divisors (1).

897811207 is an equidigital number, since it uses as much as digits as its factorization.

897811207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 897811207 is about 29963.4979099570. The cubic root of 897811207 is about 964.7060616923.

The spelling of 897811207 in words is "eight hundred ninety-seven million, eight hundred eleven thousand, two hundred seven".