653089820 has 24 divisors (see below), whose sum is σ = 1404941328. Its totient is φ = 254864000.

The previous prime is 653089783. The next prime is 653089841. The reversal of 653089820 is 28980356.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 397406 + ... + 399045.

It is an arithmetic number, because the mean of its divisors is an integer number (58539222).

Almost surely, 2^653089820 is an apocalyptic number.

It is an amenable number.

653089820 is an abundant number, since it is smaller than the sum of its proper divisors (751851508).

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

653089820 is a wasteful number, since it uses less digits than its factorization.

653089820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796501 (or 796499 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 653089820 is about 25555.6220820390. The cubic root of 653089820 is about 867.6095120408.

The spelling of 653089820 in words is "six hundred fifty-three million, eighty-nine thousand, eight hundred twenty".