997000635 has 16 divisors (see below), whose sum is σ = 1598628096. Its totient is φ = 530591328.

The previous prime is 997000591. The next prime is 997000637. The reversal of 997000635 is 536000799.

It is not a de Polignac number, because 997000635 - 2⁷ = 997000507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997000593 and 997000602.

It is not an unprimeable number, because it can be changed into a prime (997000637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64159 + ... + 78168.

It is an arithmetic number, because the mean of its divisors is an integer number (99914256).

Almost surely, 2^997000635 is an apocalyptic number.

997000635 is a deficient number, since it is larger than the sum of its proper divisors (601627461).

997000635 is a wasteful number, since it uses less digits than its factorization.

997000635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142802.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 997000635 is about 31575.3168630182. The cubic root of 997000635 is about 998.9992104210. Note that the first 3 decimals are identical.

The spelling of 997000635 in words is "nine hundred ninety-seven million, six hundred thirty-five", and thus it is an aban number.