697667 has 4 divisors (see below), whose sum is σ = 699936. Its totient is φ = 695400.

The previous prime is 697643. The next prime is 697673. The reversal of 697667 is 766796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 697667 - 2⁶ = 697603 is a prime.

It is a Duffinian number.

Its product of digits (95256) is a multiple of the sum of its prime divisors (2268).

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697667.

It is not an unprimeable number, because it can be changed into a prime (697637) 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, 584 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (174984).

2⁶⁹⁷⁶⁶⁷ is an apocalyptic number.

697667 is a deficient number, since it is larger than the sum of its proper divisors (2269).

697667 is a wasteful number, since it uses less digits than its factorization.

697667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268.

The product of its digits is 95256, while the sum is 41.

The square root of 697667 is about 835.2646287255. The cubic root of 697667 is about 88.6916484780.

The spelling of 697667 in words is "six hundred ninety-seven thousand, six hundred sixty-seven".