997000679 has 2 divisors, whose sum is σ = 997000680. Its totient is φ = 997000678.

The previous prime is 997000643. The next prime is 997000681. The reversal of 997000679 is 976000799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997000679 - 2⁸ = 997000423 is a prime.

It is a super-2 number, since 2×997000679² = 1988020707852922082, which contains 22 as substring.

Together with 997000681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997000079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498500339 + 498500340.

It is an arithmetic number, because the mean of its divisors is an integer number (498500340).

Almost surely, 2^997000679 is an apocalyptic number.

997000679 is a deficient number, since it is larger than the sum of its proper divisors (1).

997000679 is an equidigital number, since it uses as much as digits as its factorization.

997000679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 997000679 is about 31575.3175597649. The cubic root of 997000679 is about 998.9992251171. Note that the first 3 decimals are identical.

The spelling of 997000679 in words is "nine hundred ninety-seven million, six hundred seventy-nine", and thus it is an aban number.