1003640 has 32 divisors (see below), whose sum is σ = 2464560. Its totient is φ = 364800.

The previous prime is 1003631. The next prime is 1003679. The reversal of 1003640 is 463001.

1003640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701 + ... + 1580.

2^1003640 is an apocalyptic number.

1003640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003640 is an abundant number, since it is smaller than the sum of its proper divisors (1460920).

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

1003640 is a wasteful number, since it uses less digits than its factorization.

1003640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303 (or 2299 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1003640 is about 1001.8183468074. The cubic root of 1003640 is about 100.1211864125.

Adding to 1003640 its reverse (463001), we get a palindrome (1466641).

The spelling of 1003640 in words is "one million, three thousand, six hundred forty".