6746624 has 20 divisors (see below), whose sum is σ = 13481094. Its totient is φ = 3373056.

The previous prime is 6746611. The next prime is 6746627. The reversal of 6746624 is 4266476.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5382400 + 1364224 = 2320^2 + 1168^2 .

It is not an unprimeable number, because it can be changed into a prime (6746627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077 + ... + 7100.

Almost surely, 2^6746624 is an apocalyptic number.

6746624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6746624 is a deficient number, since it is larger than the sum of its proper divisors (6734470).

6746624 is an equidigital number, since it uses as much as digits as its factorization.

6746624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13195 (or 13179 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 6746624 is about 2597.4264185921. The cubic root of 6746624 is about 188.9566448710.

It can be divided in two parts, 6 and 746624, that multiplied together give a palindrome (4479744).

The spelling of 6746624 in words is "six million, seven hundred forty-six thousand, six hundred twenty-four".