128859667 has 2 divisors, whose sum is σ = 128859668. Its totient is φ = 128859666.

The previous prime is 128859613. The next prime is 128859697. The reversal of 128859667 is 766958821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128859667 - 2²³ = 120471059 is a prime.

It is not a weakly prime, because it can be changed into another prime (128859607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64429833 + 64429834.

It is an arithmetic number, because the mean of its divisors is an integer number (64429834).

Almost surely, 2^128859667 is an apocalyptic number.

128859667 is a deficient number, since it is larger than the sum of its proper divisors (1).

128859667 is an equidigital number, since it uses as much as digits as its factorization.

128859667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The square root of 128859667 is about 11351.6371946958. The cubic root of 128859667 is about 505.0941457649.

The spelling of 128859667 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, six hundred sixty-seven".