6721074 has 12 divisors (see below), whose sum is σ = 14562366. Its totient is φ = 2240352.

The previous prime is 6721061. The next prime is 6721093. The reversal of 6721074 is 4701276.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 294849 = 2535^2 + 543^2 .

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

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 186679 + ... + 186714.

Almost surely, 2^6721074 is an apocalyptic number.

6721074 is an abundant number, since it is smaller than the sum of its proper divisors (7841292).

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

6721074 is a wasteful number, since it uses less digits than its factorization.

6721074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373401 (or 373398 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 6721074 is about 2592.5034233343. The cubic root of 6721074 is about 188.7178118584.

The spelling of 6721074 in words is "six million, seven hundred twenty-one thousand, seventy-four".