6472921 has 16 divisors (see below), whose sum is σ = 8072064. Its totient is φ = 5053824.

The previous prime is 6472909. The next prime is 6472927. The reversal of 6472921 is 1292746.

It is a cyclic number.

It is not a de Polignac number, because 6472921 - 2¹¹ = 6470873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6472927) 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 15 ways as a sum of consecutive naturals, for example, 7125 + ... + 7981.

It is an arithmetic number, because the mean of its divisors is an integer number (504504).

Almost surely, 2^6472921 is an apocalyptic number.

It is an amenable number.

6472921 is a deficient number, since it is larger than the sum of its proper divisors (1599143).

6472921 is a wasteful number, since it uses less digits than its factorization.

6472921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 6048, while the sum is 31.

The square root of 6472921 is about 2544.1935854019. The cubic root of 6472921 is about 186.3660364265.

The spelling of 6472921 in words is "six million, four hundred seventy-two thousand, nine hundred twenty-one".