1000653 has 8 divisors (see below), whose sum is σ = 1365408. Its totient is φ = 651504.

The previous prime is 1000651. The next prime is 1000667. The reversal of 1000653 is 3560001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1000653 - 2¹ = 1000651 is a prime.

1000653 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3750 + ... + 4007.

It is an arithmetic number, because the mean of its divisors is an integer number (170676).

2^1000653 is an apocalyptic number.

It is an amenable number.

1000653 is a deficient number, since it is larger than the sum of its proper divisors (364755).

1000653 is an equidigital number, since it uses as much as digits as its factorization.

1000653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1000653 is about 1000.3264467163. The cubic root of 1000653 is about 100.0217619305.

Adding to 1000653 its reverse (3560001), we get a palindrome (4560654).

It can be divided in two parts, 1000 and 653, that added together give a triangular number (1653 = T₅₇).

The spelling of 1000653 in words is "one million, six hundred fifty-three", and thus it is an aban number.