663696697 has 8 divisors (see below), whose sum is σ = 691827840. Its totient is φ = 635915280.

The previous prime is 663696689. The next prime is 663696739. The reversal of 663696697 is 796696366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663696697 - 2³ = 663696689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663696097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83553 + ... + 91150.

It is an arithmetic number, because the mean of its divisors is an integer number (86478480).

Almost surely, 2^663696697 is an apocalyptic number.

It is an amenable number.

663696697 is a deficient number, since it is larger than the sum of its proper divisors (28131143).

663696697 is a wasteful number, since it uses less digits than its factorization.

663696697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174863.

The product of its digits is 13226976, while the sum is 58.

The square root of 663696697 is about 25762.3115616592. The cubic root of 663696697 is about 872.2812798113.

The spelling of 663696697 in words is "six hundred sixty-three million, six hundred ninety-six thousand, six hundred ninety-seven".