988633 has 4 divisors (see below), whose sum is σ = 1012788. Its totient is φ = 964480.

The previous prime is 988607. The next prime is 988643. The reversal of 988633 is 336889.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 683929 = 552^2 + 827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988633 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 988592 and 988601.

It is not an unprimeable number, because it can be changed into a prime (988643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12016 + ... + 12097.

It is an arithmetic number, because the mean of its divisors is an integer number (253197).

2⁹⁸⁸⁶³³ is an apocalyptic number.

It is an amenable number.

988633 is a deficient number, since it is larger than the sum of its proper divisors (24155).

988633 is a wasteful number, since it uses less digits than its factorization.

988633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24154.

The product of its digits is 31104, while the sum is 37.

The square root of 988633 is about 994.3002564618. The cubic root of 988633 is about 99.6196552125.

The spelling of 988633 in words is "nine hundred eighty-eight thousand, six hundred thirty-three".