652109661 has 24 divisors (see below), whose sum is σ = 1077473280. Its totient is φ = 372296736.

The previous prime is 652109629. The next prime is 652109671. The reversal of 652109661 is 166901256.

It is not a de Polignac number, because 652109661 - 2⁵ = 652109629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652109671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76531 + ... + 84623.

It is an arithmetic number, because the mean of its divisors is an integer number (44894720).

Almost surely, 2^652109661 is an apocalyptic number.

It is an amenable number.

652109661 is a deficient number, since it is larger than the sum of its proper divisors (425363619).

652109661 is a wasteful number, since it uses less digits than its factorization.

652109661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385 (or 9382 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 652109661 is about 25536.4379074295. The cubic root of 652109661 is about 867.1752578101.

The spelling of 652109661 in words is "six hundred fifty-two million, one hundred nine thousand, six hundred sixty-one".