2003240666 has 32 divisors (see below), whose sum is σ = 3484228608. Its totient is φ = 846086400.

The previous prime is 2003240639. The next prime is 2003240693. The reversal of 2003240666 is 6660423002.

It is an interprime number because it is at equal distance from previous prime (2003240639) and next prime (2003240693).

It is a super-2 number, since 2×2003240666² = 8025946331832247112, which contains 22 as substring.

It is a Curzon number.

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, 312146 + ... + 318498.

It is an arithmetic number, because the mean of its divisors is an integer number (108882144).

Almost surely, 2^2003240666 is an apocalyptic number.

2003240666 is a deficient number, since it is larger than the sum of its proper divisors (1480987942).

2003240666 is a wasteful number, since it uses less digits than its factorization.

2003240666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 2003240666 is about 44757.5766323424. The cubic root of 2003240666 is about 1260.6011798995.

Adding to 2003240666 its reverse (6660423002), we get a palindrome (8663663668).

The spelling of 2003240666 in words is "two billion, three million, two hundred forty thousand, six hundred sixty-six".