20695913 has 8 divisors (see below), whose sum is σ = 24292032. Its totient is φ = 17259696.

The previous prime is 20695903. The next prime is 20695949. The reversal of 20695913 is 31959602.

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 20695913 - 2⁸ = 20695657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20695903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39695 + ... + 40212.

It is an arithmetic number, because the mean of its divisors is an integer number (3036504).

Almost surely, 2^20695913 is an apocalyptic number.

It is an amenable number.

20695913 is a deficient number, since it is larger than the sum of its proper divisors (3596119).

20695913 is an equidigital number, since it uses as much as digits as its factorization.

20695913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79951.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 20695913 is about 4549.2760962597. The cubic root of 20695913 is about 274.5542663529.

The spelling of 20695913 in words is "twenty million, six hundred ninety-five thousand, nine hundred thirteen".