997008007 has 2 divisors, whose sum is σ = 997008008. Its totient is φ = 997008006.

The previous prime is 997007989. The next prime is 997008011. The reversal of 997008007 is 700800799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997008007 is a prime.

It is a super-2 number, since 2×997008007² = 1988049932044224098, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997008017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498504003 + 498504004.

It is an arithmetic number, because the mean of its divisors is an integer number (498504004).

Almost surely, 2^997008007 is an apocalyptic number.

997008007 is a deficient number, since it is larger than the sum of its proper divisors (1).

997008007 is an equidigital number, since it uses as much as digits as its factorization.

997008007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 997008007 is about 31575.4335995565. The cubic root of 997008007 is about 999.0016726742.

The spelling of 997008007 in words is "nine hundred ninety-seven million, eight thousand, seven".