2466640 has 40 divisors (see below), whose sum is σ = 6258528. Its totient is φ = 896640.

The previous prime is 2466631. The next prime is 2466647. The reversal of 2466640 is 466642.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2466599 and 2466608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2466647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522 + ... + 2281.

2^2466640 is an apocalyptic number.

2466640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2466640 is an abundant number, since it is smaller than the sum of its proper divisors (3791888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2466640 is a wasteful number, since it uses less digits than its factorization.

2466640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827 (or 2821 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 2466640 is about 1570.5540423685. The cubic root of 2466640 is about 135.1144890693.

It can be divided in two parts, 246 and 6640, that added together give a palindrome (6886).

The spelling of 2466640 in words is "two million, four hundred sixty-six thousand, six hundred forty".