10201665 has 16 divisors (see below), whose sum is σ = 16531200. Its totient is φ = 5371392.

The previous prime is 10201663. The next prime is 10201693. The reversal of 10201665 is 56610201.

It is a happy number.

It is not a de Polignac number, because 10201665 - 2¹ = 10201663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10201663) 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, 3120 + ... + 5489.

It is an arithmetic number, because the mean of its divisors is an integer number (1033200).

Almost surely, 2^10201665 is an apocalyptic number.

10201665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10201665 is a deficient number, since it is larger than the sum of its proper divisors (6329535).

10201665 is an equidigital number, since it uses as much as digits as its factorization.

10201665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8696.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 10201665 is about 3194.0045397588. The cubic root of 10201665 is about 216.8820881781.

Adding to 10201665 its reverse (56610201), we get a palindrome (66811866).

The spelling of 10201665 in words is "ten million, two hundred one thousand, six hundred sixty-five".