20655103 has 16 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 17035200.

The previous prime is 20655101. The next prime is 20655143. The reversal of 20655103 is 30155602.

It is a happy number.

It is not a de Polignac number, because 20655103 - 2¹ = 20655101 is a prime.

It is a super-3 number, since 3×20655103³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655101) 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, 22218 + ... + 23128.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^20655103 is an apocalyptic number.

20655103 is a deficient number, since it is larger than the sum of its proper divisors (3859457).

20655103 is an equidigital number, since it uses as much as digits as its factorization.

20655103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 20655103 is about 4544.7885539374. The cubic root of 20655103 is about 274.3736842834.

The spelling of 20655103 in words is "twenty million, six hundred fifty-five thousand, one hundred three".