997063211 has 2 divisors, whose sum is σ = 997063212. Its totient is φ = 997063210.

The previous prime is 997063159. The next prime is 997063253. The reversal of 997063211 is 112360799.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (112360799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997063211 - 2¹⁸ = 996801067 is a prime.

It is not a weakly prime, because it can be changed into another prime (997068211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498531605 + 498531606.

It is an arithmetic number, because the mean of its divisors is an integer number (498531606).

Almost surely, 2^997063211 is an apocalyptic number.

997063211 is a deficient number, since it is larger than the sum of its proper divisors (1).

997063211 is an equidigital number, since it uses as much as digits as its factorization.

997063211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 997063211 is about 31576.3077480569. The cubic root of 997063211 is about 999.0201104635.

The spelling of 997063211 in words is "nine hundred ninety-seven million, sixty-three thousand, two hundred eleven".