6721098 has 48 divisors (see below), whose sum is σ = 14813280. Its totient is φ = 2030112.

The previous prime is 6721093. The next prime is 6721109. The reversal of 6721098 is 8901276.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62761 + ... + 62867.

It is an arithmetic number, because the mean of its divisors is an integer number (308610).

Almost surely, 2^6721098 is an apocalyptic number.

6721098 is an abundant number, since it is smaller than the sum of its proper divisors (8092182).

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

6721098 is a wasteful number, since it uses less digits than its factorization.

6721098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 6721098 is about 2592.5080520608. The cubic root of 6721098 is about 188.7180364863.

It can be divided in two parts, 672 and 1098, that added together give a triangular number (1770 = T₅₉).

The spelling of 6721098 in words is "six million, seven hundred twenty-one thousand, ninety-eight".