6722478 has 24 divisors (see below), whose sum is σ = 16646448. Its totient is φ = 1920672.

The previous prime is 6722477. The next prime is 6722479. The reversal of 6722478 is 8742276.

It is an interprime number because it is at equal distance from previous prime (6722477) and next prime (6722479).

It is a d-powerful number, because it can be written as 6⁸ + 7⁵ + 2³ + 2¹³ + 4¹¹ + 7⁷ + 8 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722473) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26551 + ... + 26802.

It is an arithmetic number, because the mean of its divisors is an integer number (693602).

Almost surely, 2^6722478 is an apocalyptic number.

6722478 is an abundant number, since it is smaller than the sum of its proper divisors (9923970).

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

6722478 is a wasteful number, since it uses less digits than its factorization.

6722478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53368 (or 53365 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 6722478 is about 2592.7741899363. The cubic root of 6722478 is about 188.7309516909.

The spelling of 6722478 in words is "six million, seven hundred twenty-two thousand, four hundred seventy-eight".