652788 has 18 divisors (see below), whose sum is σ = 1650194. Its totient is φ = 217584.

The previous prime is 652787. The next prime is 652811. The reversal of 652788 is 887256.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 116964 = 732^2 + 342^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×652788² = 852264345888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18133 = 652788 / (6 + 5 + 2 + 7 + 8 + 8).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 652788.

It is not an unprimeable number, because it can be changed into a prime (652787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9031 + ... + 9102.

2⁶⁵²⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

652788 is an abundant number, since it is smaller than the sum of its proper divisors (997406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

652788 is a wasteful number, since it uses less digits than its factorization.

652788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18143 (or 18138 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 652788 is about 807.9529689283. The cubic root of 652788 is about 86.7475838619.

The spelling of 652788 in words is "six hundred fifty-two thousand, seven hundred eighty-eight".