988654 has 4 divisors (see below), whose sum is σ = 1482984. Its totient is φ = 494326.

The previous prime is 988651. The next prime is 988661. The reversal of 988654 is 456889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 456889 = 163 ⋅2803.

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 as a sum of consecutive naturals, namely, 247162 + ... + 247165.

It is an arithmetic number, because the mean of its divisors is an integer number (370746).

2⁹⁸⁸⁶⁵⁴ is an apocalyptic number.

988654 is a deficient number, since it is larger than the sum of its proper divisors (494330).

988654 is a wasteful number, since it uses less digits than its factorization.

988654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494329.

The product of its digits is 69120, while the sum is 40.

The square root of 988654 is about 994.3108165961. The cubic root of 988654 is about 99.6203605628.

The spelling of 988654 in words is "nine hundred eighty-eight thousand, six hundred fifty-four".