4681640 has 16 divisors (see below), whose sum is σ = 10533780. Its totient is φ = 1872640.

The previous prime is 4681639. The next prime is 4681661. The reversal of 4681640 is 461864.

It can be written as a sum of positive squares in 2 ways, for example, as 4674244 + 7396 = 2162^2 + 86^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58481 + ... + 58560.

Almost surely, 2^4681640 is an apocalyptic number.

4681640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4681640 is an abundant number, since it is smaller than the sum of its proper divisors (5852140).

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

4681640 is a wasteful number, since it uses less digits than its factorization.

4681640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117052 (or 117048 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 4681640 is about 2163.7097772114. The cubic root of 4681640 is about 167.2884684018.

The spelling of 4681640 in words is "four million, six hundred eighty-one thousand, six hundred forty".