697997 has 4 divisors (see below), whose sum is σ = 712896. Its totient is φ = 683100.

The previous prime is 697993. The next prime is 697999. The reversal of 697997 is 799796.

697997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 697997 - 2² = 697993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 14851 = 697997 / (6 + 9 + 7 + 9 + 9 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7379 + ... + 7472.

It is an arithmetic number, because the mean of its divisors is an integer number (178224).

2⁶⁹⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

697997 is a deficient number, since it is larger than the sum of its proper divisors (14899).

697997 is a wasteful number, since it uses less digits than its factorization.

697997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14898.

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

The square root of 697997 is about 835.4621475567. The cubic root of 697997 is about 88.7056301390.

The spelling of 697997 in words is "six hundred ninety-seven thousand, nine hundred ninety-seven".