20678365 has 8 divisors (see below), whose sum is σ = 26120160. Its totient is φ = 15671952.

The previous prime is 20678353. The next prime is 20678381. The reversal of 20678365 is 56387602.

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 20678365 - 2¹³ = 20670173 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, 108739 + ... + 108928.

It is an arithmetic number, because the mean of its divisors is an integer number (3265020).

Almost surely, 2^20678365 is an apocalyptic number.

It is an amenable number.

20678365 is a deficient number, since it is larger than the sum of its proper divisors (5441795).

20678365 is a wasteful number, since it uses less digits than its factorization.

20678365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217691.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 20678365 is about 4547.3470287630. The cubic root of 20678365 is about 274.4766465092.

The spelling of 20678365 in words is "twenty million, six hundred seventy-eight thousand, three hundred sixty-five".