4663440 has 160 divisors (see below), whose sum is σ = 17141760. Its totient is φ = 1161216.

The previous prime is 4663433. The next prime is 4663441. The reversal of 4663440 is 443664.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4663441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36657 + ... + 36783.

It is an arithmetic number, because the mean of its divisors is an integer number (107136).

Almost surely, 2^4663440 is an apocalyptic number.

4663440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is a pronic number, being equal to 2159×2160.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4663440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8570880).

4663440 is an abundant number, since it is smaller than the sum of its proper divisors (12478320).

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

4663440 is a wasteful number, since it uses less digits than its factorization.

4663440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 4663440 is about 2159.4999421162. The cubic root of 4663440 is about 167.0714074250.

The spelling of 4663440 in words is "four million, six hundred sixty-three thousand, four hundred forty".