653649108 has 48 divisors (see below), whose sum is σ = 1762669440. Its totient is φ = 184656384.

The previous prime is 653649107. The next prime is 653649169. The reversal of 653649108 is 801946356.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 653649108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653649107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36241 + ... + 51192.

It is an arithmetic number, because the mean of its divisors is an integer number (36722280).

Almost surely, 2^653649108 is an apocalyptic number.

It is an amenable number.

653649108 is an abundant number, since it is smaller than the sum of its proper divisors (1109020332).

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

653649108 is a wasteful number, since it uses less digits than its factorization.

653649108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87536 (or 87534 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 653649108 is about 25566.5623031334. The cubic root of 653649108 is about 867.8571069470.

The spelling of 653649108 in words is "six hundred fifty-three million, six hundred forty-nine thousand, one hundred eight".