653283840 has 480 divisors, whose sum is σ = 2481716160. Its totient is φ = 145981440.

The previous prime is 653283823. The next prime is 653283889. The reversal of 653283840 is 48382356.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17656302 + ... + 17656338.

It is an arithmetic number, because the mean of its divisors is an integer number (5170242).

Almost surely, 2^653283840 is an apocalyptic number.

653283840 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 653283840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240858080).

653283840 is an abundant number, since it is smaller than the sum of its proper divisors (1828432320).

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

653283840 is a wasteful number, since it uses less digits than its factorization.

653283840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 653283840 is about 25559.4178337457. The cubic root of 653283840 is about 867.6954200459.

The spelling of 653283840 in words is "six hundred fifty-three million, two hundred eighty-three thousand, eight hundred forty".