6748440 has 32 divisors (see below), whose sum is σ = 20245680. Its totient is φ = 1799552.

The previous prime is 6748433. The next prime is 6748447. The reversal of 6748440 is 448476.

It is an interprime number because it is at equal distance from previous prime (6748433) and next prime (6748447).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6748447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27999 + ... + 28238.

Almost surely, 2^6748440 is an apocalyptic number.

6748440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6748440 is an abundant number, since it is smaller than the sum of its proper divisors (13497240).

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

6748440 is a wasteful number, since it uses less digits than its factorization.

6748440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56251 (or 56247 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 6748440 is about 2597.7759718652. The cubic root of 6748440 is about 188.9735972748.

The spelling of 6748440 in words is "six million, seven hundred forty-eight thousand, four hundred forty".