652645445 has 8 divisors (see below), whose sum is σ = 797951736. Its totient is φ = 512264896.

The previous prime is 652645439. The next prime is 652645481. The reversal of 652645445 is 544546256.

It can be written as a sum of positive squares in 4 ways, for example, as 19166884 + 633478561 = 4378^2 + 25169^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 652645445 - 2⁶ = 652645381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231142 + ... + 1231671.

It is an arithmetic number, because the mean of its divisors is an integer number (99743967).

Almost surely, 2^652645445 is an apocalyptic number.

It is an amenable number.

652645445 is a deficient number, since it is larger than the sum of its proper divisors (145306291).

652645445 is a wasteful number, since it uses less digits than its factorization.

652645445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462871.

The product of its digits is 576000, while the sum is 41.

The square root of 652645445 is about 25546.9263317527. The cubic root of 652645445 is about 867.4126879378.

The spelling of 652645445 in words is "six hundred fifty-two million, six hundred forty-five thousand, four hundred forty-five".