111980653 has 2 divisors, whose sum is σ = 111980654. Its totient is φ = 111980652.

The previous prime is 111980641. The next prime is 111980669. The reversal of 111980653 is 356089111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107371044 + 4609609 = 10362^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 111980653 - 2¹³ = 111972461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111980753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55990326 + 55990327.

It is an arithmetic number, because the mean of its divisors is an integer number (55990327).

Almost surely, 2^111980653 is an apocalyptic number.

It is an amenable number.

111980653 is a deficient number, since it is larger than the sum of its proper divisors (1).

111980653 is an equidigital number, since it uses as much as digits as its factorization.

111980653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 111980653 is about 10582.0911449486. The cubic root of 111980653 is about 482.0006958663. Note that the first 3 decimals are identical.

The spelling of 111980653 in words is "one hundred eleven million, nine hundred eighty thousand, six hundred fifty-three".