30664986 has 16 divisors (see below), whose sum is σ = 66905568. Its totient is φ = 9292400.

The previous prime is 30664981. The next prime is 30664987. The reversal of 30664986 is 68946603.

It is not an unprimeable number, because it can be changed into a prime (30664981) 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, 232245 + ... + 232376.

It is an arithmetic number, because the mean of its divisors is an integer number (4181598).

Almost surely, 2^30664986 is an apocalyptic number.

30664986 is an abundant number, since it is smaller than the sum of its proper divisors (36240582).

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

30664986 is a wasteful number, since it uses less digits than its factorization.

30664986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464637.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 30664986 is about 5537.5974934984. The cubic root of 30664986 is about 313.0023442614.

The spelling of 30664986 in words is "thirty million, six hundred sixty-four thousand, nine hundred eighty-six".