61830906 has 8 divisors (see below), whose sum is σ = 123661824. Its totient is φ = 20610300.

The previous prime is 61830893. The next prime is 61830907. The reversal of 61830906 is 60903816.

It is a sphenic number, since it is the product of 3 distinct primes.

61830906 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (61830907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5152570 + ... + 5152581.

It is an arithmetic number, because the mean of its divisors is an integer number (15457728).

Almost surely, 2^61830906 is an apocalyptic number.

61830906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61830906 is a wasteful number, since it uses less digits than its factorization.

61830906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305156.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 61830906 is about 7863.2630631310. The cubic root of 61830906 is about 395.4290184558.

The spelling of 61830906 in words is "sixty-one million, eight hundred thirty thousand, nine hundred six".