20465601 has 16 divisors (see below), whose sum is σ = 30105600. Its totient is φ = 12286080.

The previous prime is 20465593. The next prime is 20465609. The reversal of 20465601 is 10656402.

It is an interprime number because it is at equal distance from previous prime (20465593) and next prime (20465609).

It is not a de Polignac number, because 20465601 - 2³ = 20465593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20465609) 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 15 ways as a sum of consecutive naturals, for example, 4801 + ... + 7998.

It is an arithmetic number, because the mean of its divisors is an integer number (1881600).

Almost surely, 2^20465601 is an apocalyptic number.

It is an amenable number.

20465601 is a deficient number, since it is larger than the sum of its proper divisors (9639999).

20465601 is a wasteful number, since it uses less digits than its factorization.

20465601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20465601 is about 4523.8922400959. The cubic root of 20465601 is about 273.5320167905.

The spelling of 20465601 in words is "twenty million, four hundred sixty-five thousand, six hundred one".