18696697 has 8 divisors (see below), whose sum is σ = 19209960. Its totient is φ = 18186240.

The previous prime is 18696649. The next prime is 18696721. The reversal of 18696697 is 79669681.

It can be written as a sum of positive squares in 4 ways, for example, as 241081 + 18455616 = 491^2 + 4296^2 .

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 18696697 - 2¹⁵ = 18663929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18696637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23929 + ... + 24697.

It is an arithmetic number, because the mean of its divisors is an integer number (2401245).

Almost surely, 2^18696697 is an apocalyptic number.

It is an amenable number.

18696697 is a deficient number, since it is larger than the sum of its proper divisors (513263).

18696697 is an equidigital number, since it uses as much as digits as its factorization.

18696697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403.

The product of its digits is 979776, while the sum is 52.

The square root of 18696697 is about 4323.9677380850. The cubic root of 18696697 is about 265.4126571848.

The spelling of 18696697 in words is "eighteen million, six hundred ninety-six thousand, six hundred ninety-seven".