146839661 has 2 divisors, whose sum is σ = 146839662. Its totient is φ = 146839660.

The previous prime is 146839621. The next prime is 146839687. The reversal of 146839661 is 166938641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119486761 + 27352900 = 10931^2 + 5230^2 .

It is an emirp because it is prime and its reverse (166938641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146839661 - 2⁶ = 146839597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146839621) 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, 73419830 + 73419831.

It is an arithmetic number, because the mean of its divisors is an integer number (73419831).

Almost surely, 2^146839661 is an apocalyptic number.

It is an amenable number.

146839661 is a deficient number, since it is larger than the sum of its proper divisors (1).

146839661 is an equidigital number, since it uses as much as digits as its factorization.

146839661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 146839661 is about 12117.7415800140. The cubic root of 146839661 is about 527.5712545719.

The spelling of 146839661 in words is "one hundred forty-six million, eight hundred thirty-nine thousand, six hundred sixty-one".