111345649 has 2 divisors, whose sum is σ = 111345650. Its totient is φ = 111345648.

The previous prime is 111345623. The next prime is 111345673. The reversal of 111345649 is 946543111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 21095649 = 9500^2 + 4593^2 .

It is a cyclic number.

It is not a de Polignac number, because 111345649 - 2²¹ = 109248497 is a prime.

It is not a weakly prime, because it can be changed into another prime (111345749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672824 + 55672825.

It is an arithmetic number, because the mean of its divisors is an integer number (55672825).

Almost surely, 2^111345649 is an apocalyptic number.

It is an amenable number.

111345649 is a deficient number, since it is larger than the sum of its proper divisors (1).

111345649 is an equidigital number, since it uses as much as digits as its factorization.

111345649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 111345649 is about 10552.0447781461. The cubic root of 111345649 is about 481.0878812114.

The spelling of 111345649 in words is "one hundred eleven million, three hundred forty-five thousand, six hundred forty-nine".