235020661 has 2 divisors, whose sum is σ = 235020662. Its totient is φ = 235020660.

The previous prime is 235020649. The next prime is 235020683. The reversal of 235020661 is 166020532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135140625 + 99880036 = 11625^2 + 9994^2 .

It is a cyclic number.

It is not a de Polignac number, because 235020661 - 2⁵ = 235020629 is a prime.

It is a super-2 number, since 2×235020661² = 110469422193753842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117510330 + 117510331.

It is an arithmetic number, because the mean of its divisors is an integer number (117510331).

Almost surely, 2^235020661 is an apocalyptic number.

It is an amenable number.

235020661 is a deficient number, since it is larger than the sum of its proper divisors (1).

235020661 is an equidigital number, since it uses as much as digits as its factorization.

235020661 is an odious number, because the sum of its binary digits is odd.

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

The square root of 235020661 is about 15330.3835894605. The cubic root of 235020661 is about 617.1186637336.

The spelling of 235020661 in words is "two hundred thirty-five million, twenty thousand, six hundred sixty-one".