6909630 has 64 divisors (see below), whose sum is σ = 20418048. Its totient is φ = 1457280.

The previous prime is 6909629. The next prime is 6909641. The reversal of 6909630 is 369096.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6909591 and 6909600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1465 + ... + 3995.

It is an arithmetic number, because the mean of its divisors is an integer number (319032).

Almost surely, 2^6909630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6909630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10209024).

6909630 is an abundant number, since it is smaller than the sum of its proper divisors (13508418).

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

6909630 is a wasteful number, since it uses less digits than its factorization.

6909630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 6909630 is about 2628.6175073601. The cubic root of 6909630 is about 190.4663521010.

The spelling of 6909630 in words is "six million, nine hundred nine thousand, six hundred thirty".