652660663 has 4 divisors (see below), whose sum is σ = 652890240. Its totient is φ = 652431088.

The previous prime is 652660643. The next prime is 652660681. The reversal of 652660663 is 366066256.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652660663 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 (652660643) 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, 110470 + ... + 116227.

It is an arithmetic number, because the mean of its divisors is an integer number (163222560).

Almost surely, 2^652660663 is an apocalyptic number.

652660663 is a deficient number, since it is larger than the sum of its proper divisors (229577).

652660663 is a wasteful number, since it uses less digits than its factorization.

652660663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229576.

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 652660663 is about 25547.2241740663. The cubic root of 652660663 is about 867.4194298239.

The spelling of 652660663 in words is "six hundred fifty-two million, six hundred sixty thousand, six hundred sixty-three".