20696785 has 8 divisors (see below), whose sum is σ = 24932160. Its totient is φ = 16493424.

The previous prime is 20696777. The next prime is 20696827. The reversal of 20696785 is 58769602.

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 20696785 - 2³ = 20696777 is a prime.

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, 6555 + ... + 9184.

It is an arithmetic number, because the mean of its divisors is an integer number (3116520).

Almost surely, 2^20696785 is an apocalyptic number.

It is an amenable number.

20696785 is a deficient number, since it is larger than the sum of its proper divisors (4235375).

20696785 is a wasteful number, since it uses less digits than its factorization.

20696785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16007.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 20696785 is about 4549.3719346741. The cubic root of 20696785 is about 274.5581223148.

The spelling of 20696785 in words is "twenty million, six hundred ninety-six thousand, seven hundred eighty-five".