20678485 has 8 divisors (see below), whose sum is σ = 25391520. Its totient is φ = 16157904.

The previous prime is 20678453. The next prime is 20678513. The reversal of 20678485 is 58487602.

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 20678485 - 2⁵ = 20678453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47875 + ... + 48304.

It is an arithmetic number, because the mean of its divisors is an integer number (3173940).

Almost surely, 2^20678485 is an apocalyptic number.

It is an amenable number.

20678485 is a deficient number, since it is larger than the sum of its proper divisors (4713035).

20678485 is an equidigital number, since it uses as much as digits as its factorization.

20678485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96227.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 20678485 is about 4547.3602232504. The cubic root of 20678485 is about 274.4771774527.

The spelling of 20678485 in words is "twenty million, six hundred seventy-eight thousand, four hundred eighty-five".