6721253474 has 16 divisors (see below), whose sum is σ = 10859263800. Its totient is φ = 3101587200.

The previous prime is 6721253449. The next prime is 6721253489. The reversal of 6721253474 is 4743521276.

It can be written as a sum of positive squares in 4 ways, for example, as 4226950225 + 2494303249 = 65015^2 + 49943^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162074 + ... + 199274.

Almost surely, 2^6721253474 is an apocalyptic number.

6721253474 is a deficient number, since it is larger than the sum of its proper divisors (4138010326).

6721253474 is a wasteful number, since it uses less digits than its factorization.

6721253474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44165.

The product of its digits is 282240, while the sum is 41.

The square root of 6721253474 is about 81983.2511797379. The cubic root of 6721253474 is about 1887.1949163152.

The spelling of 6721253474 in words is "six billion, seven hundred twenty-one million, two hundred fifty-three thousand, four hundred seventy-four".