230605661 has 32 divisors (see below), whose sum is σ = 278208000. Its totient is φ = 188398080.

The previous prime is 230605643. The next prime is 230605673. The reversal of 230605661 is 166506032.

It is not a de Polignac number, because 230605661 - 2²⁶ = 163496797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230602661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1547615 + ... + 1547763.

It is an arithmetic number, because the mean of its divisors is an integer number (8694000).

Almost surely, 2^230605661 is an apocalyptic number.

It is an amenable number.

230605661 is a deficient number, since it is larger than the sum of its proper divisors (47602339).

230605661 is a wasteful number, since it uses less digits than its factorization.

230605661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 230605661 is about 15185.7058117165. The cubic root of 230605661 is about 613.2298990338.

The spelling of 230605661 in words is "two hundred thirty million, six hundred five thousand, six hundred sixty-one".