18805697 has 8 divisors (see below), whose sum is σ = 19681920. Its totient is φ = 17934400.

The previous prime is 18805679. The next prime is 18805711. The reversal of 18805697 is 79650881.

It is a happy number.

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 18805697 - 2⁸ = 18805441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18805607) 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, 8204 + ... + 10242.

It is an arithmetic number, because the mean of its divisors is an integer number (2460240).

Almost surely, 2^18805697 is an apocalyptic number.

It is an amenable number.

18805697 is a deficient number, since it is larger than the sum of its proper divisors (876223).

18805697 is a wasteful number, since it uses less digits than its factorization.

18805697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18805697 is about 4336.5535855100. The cubic root of 18805697 is about 265.9274351216.

The spelling of 18805697 in words is "eighteen million, eight hundred five thousand, six hundred ninety-seven".