20695746 has 8 divisors (see below), whose sum is σ = 41391504. Its totient is φ = 6898580.

The previous prime is 20695729. The next prime is 20695747. The reversal of 20695746 is 64759602.

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

20695746 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20695747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724640 + ... + 1724651.

It is an arithmetic number, because the mean of its divisors is an integer number (5173938).

Almost surely, 2^20695746 is an apocalyptic number.

20695746 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20695746 is a wasteful number, since it uses less digits than its factorization.

20695746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449296.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 20695746 is about 4549.2577416541. The cubic root of 20695746 is about 274.5535278707.

The spelling of 20695746 in words is "twenty million, six hundred ninety-five thousand, seven hundred forty-six".