997771483 has 2 divisors, whose sum is σ = 997771484. Its totient is φ = 997771482.

The previous prime is 997771433. The next prime is 997771493. The reversal of 997771483 is 384177799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997771483 is a prime.

It is not a weakly prime, because it can be changed into another prime (997771433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498885741 + 498885742.

It is an arithmetic number, because the mean of its divisors is an integer number (498885742).

Almost surely, 2^997771483 is an apocalyptic number.

997771483 is a deficient number, since it is larger than the sum of its proper divisors (1).

997771483 is an equidigital number, since it uses as much as digits as its factorization.

997771483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 55.

The square root of 997771483 is about 31587.5210011802. The cubic root of 997771483 is about 999.2566085060.

The spelling of 997771483 in words is "nine hundred ninety-seven million, seven hundred seventy-one thousand, four hundred eighty-three".