20369601 has 24 divisors (see below), whose sum is σ = 33755904. Its totient is φ = 11594880.

The previous prime is 20369581. The next prime is 20369617. The reversal of 20369601 is 10696302.

It is a happy number.

20369601 is a `hidden beast` number, since 20 + 36 + 9 + 601 = 666.

It is not a de Polignac number, because 20369601 - 2¹⁰ = 20368577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20369681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22681 + ... + 23561.

It is an arithmetic number, because the mean of its divisors is an integer number (1406496).

Almost surely, 2^20369601 is an apocalyptic number.

20369601 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20369601 is a deficient number, since it is larger than the sum of its proper divisors (13386303).

20369601 is a wasteful number, since it uses less digits than its factorization.

20369601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 20369601 is about 4513.2694357860. The cubic root of 20369601 is about 273.1036518214.

The spelling of 20369601 in words is "twenty million, three hundred sixty-nine thousand, six hundred one".