20466687 has 8 divisors (see below), whose sum is σ = 27751680. Its totient is φ = 13413080.

The previous prime is 20466679. The next prime is 20466689. The reversal of 20466687 is 78666402.

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 20466687 - 2³ = 20466679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466689) 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, 57639 + ... + 57992.

It is an arithmetic number, because the mean of its divisors is an integer number (3468960).

Almost surely, 2^20466687 is an apocalyptic number.

20466687 is a deficient number, since it is larger than the sum of its proper divisors (7284993).

20466687 is a wasteful number, since it uses less digits than its factorization.

20466687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115693.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 20466687 is about 4524.0122678879. The cubic root of 20466687 is about 273.5368549987.

The spelling of 20466687 in words is "twenty million, four hundred sixty-six thousand, six hundred eighty-seven".