653616240 has 40 divisors (see below), whose sum is σ = 2026211088. Its totient is φ = 174297600.

The previous prime is 653616203. The next prime is 653616287. The reversal of 653616240 is 42616356.

653616240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361461 + ... + 1361940.

Almost surely, 2^653616240 is an apocalyptic number.

653616240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

653616240 is an abundant number, since it is smaller than the sum of its proper divisors (1372594848).

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

653616240 is a wasteful number, since it uses less digits than its factorization.

653616240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723417 (or 2723411 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 653616240 is about 25565.9195023375. The cubic root of 653616240 is about 867.8425603015.

The spelling of 653616240 in words is "six hundred fifty-three million, six hundred sixteen thousand, two hundred forty".