30030661 has 4 divisors (see below), whose sum is σ = 30999424. Its totient is φ = 29061900.

The previous prime is 30030629. The next prime is 30030677. The reversal of 30030661 is 16603003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30030661 - 2⁵ = 30030629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484335 + ... + 484396.

It is an arithmetic number, because the mean of its divisors is an integer number (7749856).

Almost surely, 2^30030661 is an apocalyptic number.

30030661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30030661 is a deficient number, since it is larger than the sum of its proper divisors (968763).

30030661 is an equidigital number, since it uses as much as digits as its factorization.

30030661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968762.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 30030661 is about 5480.0238138169. The cubic root of 30030661 is about 310.8290710594.

Adding to 30030661 its reverse (16603003), we get a palindrome (46633664).

The spelling of 30030661 in words is "thirty million, thirty thousand, six hundred sixty-one".