30666669 has 8 divisors (see below), whose sum is σ = 44606112. Its totient is φ = 18585840.

The previous prime is 30666667. The next prime is 30666677. The reversal of 30666669 is 96666603.

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

It is not a de Polignac number, because 30666669 - 2¹ = 30666667 is a prime.

It is a super-2 number, since 2×30666669² = 1880889175111122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30666669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30666667) 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, 464614 + ... + 464679.

It is an arithmetic number, because the mean of its divisors is an integer number (5575764).

Almost surely, 2^30666669 is an apocalyptic number.

It is an amenable number.

30666669 is a deficient number, since it is larger than the sum of its proper divisors (13939443).

30666669 is a wasteful number, since it uses less digits than its factorization.

30666669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929307.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 30666669 is about 5537.7494526206. The cubic root of 30666669 is about 313.0080703721.

The spelling of 30666669 in words is "thirty million, six hundred sixty-six thousand, six hundred sixty-nine".