4463640 has 64 divisors (see below), whose sum is σ = 14882400. Its totient is φ = 1190016.

The previous prime is 4463611. The next prime is 4463647. The reversal of 4463640 is 463644.

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 (4463647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987 + ... + 3146.

Almost surely, 2^4463640 is an apocalyptic number.

4463640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4463640 is an abundant number, since it is smaller than the sum of its proper divisors (10418760).

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

4463640 is a wasteful number, since it uses less digits than its factorization.

4463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153 (or 4143 counting only the distinct ones).

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

The square root of 4463640 is about 2112.7328274062. The cubic root of 4463640 is about 164.6504998871.

The spelling of 4463640 in words is "four million, four hundred sixty-three thousand, six hundred forty".