652400909 has 8 divisors (see below), whose sum is σ = 680036448. Its totient is φ = 625291920.

The previous prime is 652400887. The next prime is 652400923. The reversal of 652400909 is 909004256.

652400909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652400909 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 (652400989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129107 + ... + 134064.

It is an arithmetic number, because the mean of its divisors is an integer number (85004556).

Almost surely, 2^652400909 is an apocalyptic number.

It is an amenable number.

652400909 is a deficient number, since it is larger than the sum of its proper divisors (27635539).

652400909 is a wasteful number, since it uses less digits than its factorization.

652400909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263275.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 652400909 is about 25542.1398672860. The cubic root of 652400909 is about 867.3043391000.

The spelling of 652400909 in words is "six hundred fifty-two million, four hundred thousand, nine hundred nine".