1098648 has 24 divisors (see below), whose sum is σ = 2975700. Its totient is φ = 366192.

The previous prime is 1098631. The next prime is 1098649. The reversal of 1098648 is 8468901.

It is a happy number.

1098648 is a `hidden beast` number, since 1 + 0 + 9 + 8 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7558 + ... + 7701.

2^1098648 is an apocalyptic number.

1098648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1098648 is an abundant number, since it is smaller than the sum of its proper divisors (1877052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098648 is a wasteful number, since it uses less digits than its factorization.

1098648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15271 (or 15264 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1098648 is about 1048.1641092882. The cubic root of 1098648 is about 103.1857020033.

The spelling of 1098648 in words is "one million, ninety-eight thousand, six hundred forty-eight".