30664381 has 8 divisors (see below), whose sum is σ = 33765984. Its totient is φ = 27615120.

The previous prime is 30664343. The next prime is 30664391. The reversal of 30664381 is 18346603.

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

It is a cyclic number.

It is not a de Polignac number, because 30664381 - 2¹³ = 30656189 is a prime.

It is a super-2 number, since 2×30664381² = 1880608524226322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30664321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11850 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (4220748).

Almost surely, 2^30664381 is an apocalyptic number.

It is an amenable number.

30664381 is a deficient number, since it is larger than the sum of its proper divisors (3101603).

30664381 is a wasteful number, since it uses less digits than its factorization.

30664381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26171.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30664381 is about 5537.5428666512. The cubic root of 30664381 is about 313.0002858044. Note that the first 3 decimals are identical.

It can be divided in two parts, 3066 and 4381, that added together give a palindrome (7447).

The spelling of 30664381 in words is "thirty million, six hundred sixty-four thousand, three hundred eighty-one".