10003665 has 16 divisors (see below), whose sum is σ = 18292608. Its totient is φ = 4573056.

The previous prime is 10003657. The next prime is 10003673. The reversal of 10003665 is 56630001.

It is an interprime number because it is at equal distance from previous prime (10003657) and next prime (10003673).

It is not a de Polignac number, because 10003665 - 2³ = 10003657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47532 + ... + 47741.

It is an arithmetic number, because the mean of its divisors is an integer number (1143288).

Almost surely, 2^10003665 is an apocalyptic number.

10003665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10003665 is a deficient number, since it is larger than the sum of its proper divisors (8288943).

10003665 is an equidigital number, since it uses as much as digits as its factorization.

10003665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95288.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 10003665 is about 3162.8570944638. The cubic root of 10003665 is about 215.4697857989.

Adding to 10003665 its reverse (56630001), we get a palindrome (66633666).

The spelling of 10003665 in words is "ten million, three thousand, six hundred sixty-five".