61830516 has 72 divisors (see below), whose sum is σ = 160578880. Its totient is φ = 18501120.

The previous prime is 61830499. The next prime is 61830539. The reversal of 61830516 is 61503816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140625 + ... + 141063.

Almost surely, 2^61830516 is an apocalyptic number.

61830516 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61830516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80289440).

61830516 is an abundant number, since it is smaller than the sum of its proper divisors (98748364).

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

61830516 is a wasteful number, since it uses less digits than its factorization.

61830516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 61830516 is about 7863.2382642268. The cubic root of 61830516 is about 395.4281870612.

The spelling of 61830516 in words is "sixty-one million, eight hundred thirty thousand, five hundred sixteen".