997627963 has 2 divisors, whose sum is σ = 997627964. Its totient is φ = 997627962.

The previous prime is 997627951. The next prime is 997627973. The reversal of 997627963 is 369726799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997627963 - 2⁹ = 997627451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997627898 and 997627907.

It is not a weakly prime, because it can be changed into another prime (997627903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498813981 + 498813982.

It is an arithmetic number, because the mean of its divisors is an integer number (498813982).

Almost surely, 2^997627963 is an apocalyptic number.

997627963 is a deficient number, since it is larger than the sum of its proper divisors (1).

997627963 is an equidigital number, since it uses as much as digits as its factorization.

997627963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7715736, while the sum is 58.

The square root of 997627963 is about 31585.2491362661. The cubic root of 997627963 is about 999.2086950016.

The spelling of 997627963 in words is "nine hundred ninety-seven million, six hundred twenty-seven thousand, nine hundred sixty-three".