305342661 has 24 divisors (see below), whose sum is σ = 465765664. Its totient is φ = 176843520.

The previous prime is 305342659. The next prime is 305342683. The reversal of 305342661 is 166243503.

It is not a de Polignac number, because 305342661 - 2¹ = 305342659 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305342461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2275 + ... + 24816.

Almost surely, 2^305342661 is an apocalyptic number.

It is an amenable number.

305342661 is a deficient number, since it is larger than the sum of its proper divisors (160423003).

305342661 is a wasteful number, since it uses less digits than its factorization.

305342661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27141 (or 27124 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 305342661 is about 17474.0567985800. The cubic root of 305342661 is about 673.3835383657.

The spelling of 305342661 in words is "three hundred five million, three hundred forty-two thousand, six hundred sixty-one".