1003634 has 4 divisors (see below), whose sum is σ = 1505454. Its totient is φ = 501816.

The previous prime is 1003631. The next prime is 1003679. The reversal of 1003634 is 4363001.

1003634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4363001 = 1783 ⋅2447.

It can be written as a sum of positive squares in only one way, i.e., 717409 + 286225 = 847^2 + 535^2 .

It is not an unprimeable number, because it can be changed into a prime (1003631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250907 + ... + 250910.

2^1003634 is an apocalyptic number.

1003634 is a deficient number, since it is larger than the sum of its proper divisors (501820).

1003634 is an equidigital number, since it uses as much as digits as its factorization.

1003634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501819.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1003634 is about 1001.8153522481. The cubic root of 1003634 is about 100.1209868960.

Adding to 1003634 its reverse (4363001), we get a palindrome (5366635).

The spelling of 1003634 in words is "one million, three thousand, six hundred thirty-four".