653852780 has 24 divisors (see below), whose sum is σ = 1569247008. Its totient is φ = 224178048.

The previous prime is 653852779. The next prime is 653852791. The reversal of 653852780 is 87258356.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2335049 + ... + 2335328.

It is an arithmetic number, because the mean of its divisors is an integer number (65385292).

Almost surely, 2^653852780 is an apocalyptic number.

It is an amenable number.

653852780 is an abundant number, since it is smaller than the sum of its proper divisors (915394228).

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

653852780 is a wasteful number, since it uses less digits than its factorization.

653852780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670393 (or 4670391 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 653852780 is about 25570.5451643097. The cubic root of 653852780 is about 867.9472367709.

The spelling of 653852780 in words is "six hundred fifty-three million, eight hundred fifty-two thousand, seven hundred eighty".