128804695 has 4 divisors (see below), whose sum is σ = 154565640. Its totient is φ = 103043752.

The previous prime is 128804677. The next prime is 128804713. The reversal of 128804695 is 596408821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (128804677) and next prime (128804713).

It is a cyclic number.

It is not a de Polignac number, because 128804695 - 2⁹ = 128804183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12880465 + ... + 12880474.

It is an arithmetic number, because the mean of its divisors is an integer number (38641410).

Almost surely, 2^128804695 is an apocalyptic number.

128804695 is a deficient number, since it is larger than the sum of its proper divisors (25760945).

128804695 is an equidigital number, since it uses as much as digits as its factorization.

128804695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25760944.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 128804695 is about 11349.2156116623. The cubic root of 128804695 is about 505.0223105524.

The spelling of 128804695 in words is "one hundred twenty-eight million, eight hundred four thousand, six hundred ninety-five".