6748740 has 36 divisors (see below), whose sum is σ = 20471724. Its totient is φ = 1799616.

The previous prime is 6748691. The next prime is 6748771. The reversal of 6748740 is 478476.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 4743684 = 1416^2 + 2178^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6748695 and 6748704.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18567 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (568659).

Almost surely, 2^6748740 is an apocalyptic number.

6748740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6748740 is an abundant number, since it is smaller than the sum of its proper divisors (13722984).

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

6748740 is a wasteful number, since it uses less digits than its factorization.

6748740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37508 (or 37503 counting only the distinct ones).

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

The square root of 6748740 is about 2597.8337129231. The cubic root of 6748740 is about 188.9763974893.

The spelling of 6748740 in words is "six million, seven hundred forty-eight thousand, seven hundred forty".