20695693 has 16 divisors (see below), whose sum is σ = 23063040. Its totient is φ = 18489600.

The previous prime is 20695679. The next prime is 20695711. The reversal of 20695693 is 39659602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20695693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20695643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23721 + ... + 24577.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^20695693 is an apocalyptic number.

It is an amenable number.

20695693 is a deficient number, since it is larger than the sum of its proper divisors (2367347).

20695693 is a wasteful number, since it uses less digits than its factorization.

20695693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 20695693 is about 4549.2519165243. The cubic root of 20695693 is about 274.5532935013.

The spelling of 20695693 in words is "twenty million, six hundred ninety-five thousand, six hundred ninety-three".