30655664 has 40 divisors (see below), whose sum is σ = 67339440. Its totient is φ = 13402368.

The previous prime is 30655661. The next prime is 30655673. The reversal of 30655664 is 46655603.

It is not an unprimeable number, because it can be changed into a prime (30655661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74 + ... + 7830.

It is an arithmetic number, because the mean of its divisors is an integer number (1683486).

Almost surely, 2^30655664 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 30655664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33669720).

30655664 is an abundant number, since it is smaller than the sum of its proper divisors (36683776).

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

30655664 is a wasteful number, since it uses less digits than its factorization.

30655664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797 (or 7791 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 30655664 is about 5536.7557287639. The cubic root of 30655664 is about 312.9706240059.

The spelling of 30655664 in words is "thirty million, six hundred fifty-five thousand, six hundred sixty-four".