111623977 has 2 divisors, whose sum is σ = 111623978. Its totient is φ = 111623976.

The previous prime is 111623959. The next prime is 111624043. The reversal of 111623977 is 779326111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109495296 + 2128681 = 10464^2 + 1459^2 .

It is a cyclic number.

It is not a de Polignac number, because 111623977 - 2⁷ = 111623849 is a prime.

It is a super-3 number, since 3×111623977³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111623947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55811988 + 55811989.

It is an arithmetic number, because the mean of its divisors is an integer number (55811989).

Almost surely, 2^111623977 is an apocalyptic number.

It is an amenable number.

111623977 is a deficient number, since it is larger than the sum of its proper divisors (1).

111623977 is an equidigital number, since it uses as much as digits as its factorization.

111623977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 37.

The square root of 111623977 is about 10565.2248911228. The cubic root of 111623977 is about 481.4884022156.

The spelling of 111623977 in words is "one hundred eleven million, six hundred twenty-three thousand, nine hundred seventy-seven".