20496685 has 8 divisors (see below), whose sum is σ = 26832096. Its totient is φ = 14906640.

The previous prime is 20496683. The next prime is 20496689. The reversal of 20496685 is 58669402.

It is a happy number.

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

It is not a de Polignac number, because 20496685 - 2¹ = 20496683 is a prime.

It is a super-2 number, since 2×20496685² = 840228191978450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20496683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186279 + ... + 186388.

It is an arithmetic number, because the mean of its divisors is an integer number (3354012).

Almost surely, 2^20496685 is an apocalyptic number.

It is an amenable number.

20496685 is a deficient number, since it is larger than the sum of its proper divisors (6335411).

20496685 is a wasteful number, since it uses less digits than its factorization.

20496685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372683.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 20496685 is about 4527.3264737591. The cubic root of 20496685 is about 273.6704306457.

The spelling of 20496685 in words is "twenty million, four hundred ninety-six thousand, six hundred eighty-five".