997695605 has 16 divisors (see below), whose sum is σ = 1281614400. Its totient is φ = 743328000.

The previous prime is 997695581. The next prime is 997695623. The reversal of 997695605 is 506596799.

It is not a de Polignac number, because 997695605 - 2¹² = 997691509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83396 + ... + 94605.

It is an arithmetic number, because the mean of its divisors is an integer number (80100900).

Almost surely, 2^997695605 is an apocalyptic number.

997695605 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

997695605 is a deficient number, since it is larger than the sum of its proper divisors (283918795).

997695605 is a wasteful number, since it uses less digits than its factorization.

997695605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178084.

The product of its (nonzero) digits is 4592700, while the sum is 56.

The square root of 997695605 is about 31586.3199027680. The cubic root of 997695605 is about 999.2312775506.

The spelling of 997695605 in words is "nine hundred ninety-seven million, six hundred ninety-five thousand, six hundred five".