1098654 has 16 divisors (see below), whose sum is σ = 2229120. Its totient is φ = 360920.

The previous prime is 1098649. The next prime is 1098667. The reversal of 1098654 is 4568901.

It is a super-2 number, since 2×1098654² = 2414081223432, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864 + ... + 1715.

It is an arithmetic number, because the mean of its divisors is an integer number (139320).

2^1098654 is an apocalyptic number.

1098654 is an abundant number, since it is smaller than the sum of its proper divisors (1130466).

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

1098654 is a wasteful number, since it uses less digits than its factorization.

1098654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1098654 is about 1048.1669714316. The cubic root of 1098654 is about 103.1858898442.

The spelling of 1098654 in words is "one million, ninety-eight thousand, six hundred fifty-four".