6181630 has 32 divisors (see below), whose sum is σ = 13696704. Its totient is φ = 1956096.

The previous prime is 6181619. The next prime is 6181633. The reversal of 6181630 is 361816.

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

It is a junction number, because it is equal to n+sod(n) for n = 6181595 and 6181604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6181633) 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, 2487 + ... + 4306.

It is an arithmetic number, because the mean of its divisors is an integer number (428022).

Almost surely, 2^6181630 is an apocalyptic number.

6181630 is an abundant number, since it is smaller than the sum of its proper divisors (7515074).

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

6181630 is a wasteful number, since it uses less digits than its factorization.

6181630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 6181630 is about 2486.2883983963. The cubic root of 6181630 is about 183.5274381282.

The spelling of 6181630 in words is "six million, one hundred eighty-one thousand, six hundred thirty".