30605641 has 4 divisors (see below), whose sum is σ = 33387984. Its totient is φ = 27823300.

The previous prime is 30605633. The next prime is 30605647. The reversal of 30605641 is 14650603.

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 30605641 - 2³ = 30605633 is a prime.

It is a super-2 number, since 2×30605641² = 1873410522041762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30605647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391155 + ... + 1391176.

It is an arithmetic number, because the mean of its divisors is an integer number (8346996).

Almost surely, 2^30605641 is an apocalyptic number.

It is an amenable number.

30605641 is a deficient number, since it is larger than the sum of its proper divisors (2782343).

30605641 is a wasteful number, since it uses less digits than its factorization.

30605641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782342.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30605641 is about 5532.2365278430. The cubic root of 30605641 is about 312.8002992793.

The spelling of 30605641 in words is "thirty million, six hundred five thousand, six hundred forty-one".