1098680217 has 4 divisors (see below), whose sum is σ = 1464906960. Its totient is φ = 732453476.

The previous prime is 1098680201. The next prime is 1098680237. The reversal of 1098680217 is 7120868901.

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 a cyclic number.

It is not a de Polignac number, because 1098680217 - 2⁴ = 1098680201 is a prime.

It is a super-4 number, since 4×1098680217⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (1098680237) 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, 183113367 + ... + 183113372.

It is an arithmetic number, because the mean of its divisors is an integer number (366226740).

Almost surely, 2^1098680217 is an apocalyptic number.

It is an amenable number.

1098680217 is a deficient number, since it is larger than the sum of its proper divisors (366226743).

1098680217 is an equidigital number, since it uses as much as digits as its factorization.

1098680217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366226742.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 1098680217 is about 33146.3454546651. The cubic root of 1098680217 is about 1031.8671060698.

The spelling of 1098680217 in words is "one billion, ninety-eight million, six hundred eighty thousand, two hundred seventeen".