653027640 has 64 divisors (see below), whose sum is σ = 1960848000. Its totient is φ = 173983872.

The previous prime is 653027603. The next prime is 653027653. The reversal of 653027640 is 46720356.

653027640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202279 + ... + 205481.

It is an arithmetic number, because the mean of its divisors is an integer number (30638250).

Almost surely, 2^653027640 is an apocalyptic number.

653027640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

653027640 is an abundant number, since it is smaller than the sum of its proper divisors (1307820360).

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

653027640 is a wasteful number, since it uses less digits than its factorization.

653027640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916 (or 4912 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 653027640 is about 25554.4054910303. The cubic root of 653027640 is about 867.5819764349.

Adding to 653027640 its reverse (46720356), we get a palindrome (699747996).

The spelling of 653027640 in words is "six hundred fifty-three million, twenty-seven thousand, six hundred forty".