234020661 has 32 divisors (see below), whose sum is σ = 373137408. Its totient is φ = 127666560.

The previous prime is 234020659. The next prime is 234020669. The reversal of 234020661 is 166020432.

It is not a de Polignac number, because 234020661 - 2¹ = 234020659 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 (234020669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37576 + ... + 43358.

It is an arithmetic number, because the mean of its divisors is an integer number (11660544).

Almost surely, 2^234020661 is an apocalyptic number.

234020661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

234020661 is a deficient number, since it is larger than the sum of its proper divisors (139116747).

234020661 is a wasteful number, since it uses less digits than its factorization.

234020661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5881.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 234020661 is about 15297.7338517834. The cubic root of 234020661 is about 616.2421507146.

The spelling of 234020661 in words is "two hundred thirty-four million, twenty thousand, six hundred sixty-one".