6691030 has 16 divisors (see below), whose sum is σ = 12752640. Its totient is φ = 2518912.

The previous prime is 6691019. The next prime is 6691037. The reversal of 6691030 is 301966.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6690986 and 6691004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19510 + ... + 19849.

It is an arithmetic number, because the mean of its divisors is an integer number (797040).

Almost surely, 2^6691030 is an apocalyptic number.

6691030 is a deficient number, since it is larger than the sum of its proper divisors (6061610).

6691030 is a wasteful number, since it uses less digits than its factorization.

6691030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39383.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 6691030 is about 2586.7025341156. The cubic root of 6691030 is about 188.4361948000.

Adding to 6691030 its reverse (301966), we get a palindrome (6992996).

The spelling of 6691030 in words is "six million, six hundred ninety-one thousand, thirty".