6730906 has 32 divisors (see below), whose sum is σ = 12837888. Its totient is φ = 2574720.

The previous prime is 6730903. The next prime is 6730907. The reversal of 6730906 is 6090376.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (6730903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5046 + ... + 6238.

It is an arithmetic number, because the mean of its divisors is an integer number (401184).

Almost surely, 2^6730906 is an apocalyptic number.

6730906 is a deficient number, since it is larger than the sum of its proper divisors (6106982).

6730906 is a wasteful number, since it uses less digits than its factorization.

6730906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 6730906 is about 2594.3989670057. The cubic root of 6730906 is about 188.8097896927.

It can be divided in two parts, 67 and 30906, that multiplied together give a palindrome (2070702).

The spelling of 6730906 in words is "six million, seven hundred thirty thousand, nine hundred six".