653047840 has 24 divisors (see below), whose sum is σ = 1542825900. Its totient is φ = 261219072.

The previous prime is 653047799. The next prime is 653047849. The reversal of 653047840 is 48740356.

It can be written as a sum of positive squares in 2 ways, for example, as 610485264 + 42562576 = 24708^2 + 6524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 653047840.

It is not an unprimeable number, because it can be changed into a prime (653047849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040615 + ... + 2040934.

Almost surely, 2^653047840 is an apocalyptic number.

It is an amenable number.

653047840 is an abundant number, since it is smaller than the sum of its proper divisors (889778060).

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

653047840 is a wasteful number, since it uses less digits than its factorization.

653047840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081564 (or 4081556 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 653047840 is about 25554.8007231518. The cubic root of 653047840 is about 867.5909219344.

The spelling of 653047840 in words is "six hundred fifty-three million, forty-seven thousand, eight hundred forty".