30613660 has 96 divisors (see below), whose sum is σ = 81349632. Its totient is φ = 9400320.

The previous prime is 30613657. The next prime is 30613673. The reversal of 30613660 is 6631603.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 158524 + ... + 158716.

It is an arithmetic number, because the mean of its divisors is an integer number (847392).

Almost surely, 2^30613660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30613660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40674816).

30613660 is an abundant number, since it is smaller than the sum of its proper divisors (50735972).

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

30613660 is a wasteful number, since it uses less digits than its factorization.

30613660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30613660 is about 5532.9612324686. The cubic root of 30613660 is about 312.8276158837.

The spelling of 30613660 in words is "thirty million, six hundred thirteen thousand, six hundred sixty".