652128911 has 4 divisors (see below), whose sum is σ = 745290192. Its totient is φ = 558967632.

The previous prime is 652128881. The next prime is 652128923. The reversal of 652128911 is 119821256.

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

It is a cyclic number.

It is not a de Polignac number, because 652128911 - 2⁶ = 652128847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652128931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46580630 + ... + 46580643.

It is an arithmetic number, because the mean of its divisors is an integer number (186322548).

Almost surely, 2^652128911 is an apocalyptic number.

652128911 is a deficient number, since it is larger than the sum of its proper divisors (93161281).

652128911 is an equidigital number, since it uses as much as digits as its factorization.

652128911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93161280.

The product of its digits is 8640, while the sum is 35.

The square root of 652128911 is about 25536.8148170440. The cubic root of 652128911 is about 867.1837906078.

The spelling of 652128911 in words is "six hundred fifty-two million, one hundred twenty-eight thousand, nine hundred eleven".