128653697 has 16 divisors (see below), whose sum is σ = 137884032. Its totient is φ = 119771520.

The previous prime is 128653691. The next prime is 128653717. The reversal of 128653697 is 796356821.

It is not a de Polignac number, because 128653697 - 2²² = 124459393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128653691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149693 + ... + 150549.

It is an arithmetic number, because the mean of its divisors is an integer number (8617752).

Almost surely, 2^128653697 is an apocalyptic number.

It is an amenable number.

128653697 is a deficient number, since it is larger than the sum of its proper divisors (9230335).

128653697 is a wasteful number, since it uses less digits than its factorization.

128653697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048.

The product of its digits is 544320, while the sum is 47.

The square root of 128653697 is about 11342.5613068654. The cubic root of 128653697 is about 504.8248871662.

The spelling of 128653697 in words is "one hundred twenty-eight million, six hundred fifty-three thousand, six hundred ninety-seven".