988653 has 4 divisors (see below), whose sum is σ = 1318208. Its totient is φ = 659100.

The previous prime is 988651. The next prime is 988661. The reversal of 988653 is 356889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 988653 - 2¹ = 988651 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164773 + ... + 164778.

It is an arithmetic number, because the mean of its divisors is an integer number (329552).

2⁹⁸⁸⁶⁵³ is an apocalyptic number.

It is an amenable number.

988653 is a deficient number, since it is larger than the sum of its proper divisors (329555).

988653 is a wasteful number, since it uses less digits than its factorization.

988653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329554.

The product of its digits is 51840, while the sum is 39.

The square root of 988653 is about 994.3103137351. The cubic root of 988653 is about 99.6203269750.

The spelling of 988653 in words is "nine hundred eighty-eight thousand, six hundred fifty-three".