652543650 has 144 divisors (see below), whose sum is σ = 1923992928. Its totient is φ = 157248000.

The previous prime is 652543637. The next prime is 652543663. The reversal of 652543650 is 56345256.

It is a happy number.

652543650 is a `hidden beast` number, since 6 + 52 + 543 + 65 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (652543637) and next prime (652543663).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 1192677 + ... + 1193223.

It is an arithmetic number, because the mean of its divisors is an integer number (13361062).

Almost surely, 2^652543650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652543650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961996464).

652543650 is an abundant number, since it is smaller than the sum of its proper divisors (1271449278).

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

652543650 is a wasteful number, since it uses less digits than its factorization.

652543650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 652543650 is about 25544.9339400203. The cubic root of 652543650 is about 867.3675879700.

The spelling of 652543650 in words is "six hundred fifty-two million, five hundred forty-three thousand, six hundred fifty".