652907640 has 256 divisors, whose sum is σ = 2571264000. Its totient is φ = 128494080.

The previous prime is 652907623. The next prime is 652907663. The reversal of 652907640 is 46709256.

652907640 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 63 ways as a sum of consecutive naturals, for example, 173701 + ... + 177419.

It is an arithmetic number, because the mean of its divisors is an integer number (10044000).

Almost surely, 2^652907640 is an apocalyptic number.

652907640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652907640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285632000).

652907640 is an abundant number, since it is smaller than the sum of its proper divisors (1918356360).

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

652907640 is a wasteful number, since it uses less digits than its factorization.

652907640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770 (or 3766 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 652907640 is about 25552.0574514069. The cubic root of 652907640 is about 867.5288310505.

The spelling of 652907640 in words is "six hundred fifty-two million, nine hundred seven thousand, six hundred forty".