652665420 has 72 divisors (see below), whose sum is σ = 2159735760. Its totient is φ = 158221440.

The previous prime is 652665401. The next prime is 652665421. The reversal of 652665420 is 24566256.

652665420 is a `hidden beast` number, since 6 + 52 + 66 + 542 + 0 = 666.

652665420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (652665421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162835 + ... + 166794.

It is an arithmetic number, because the mean of its divisors is an integer number (29996330).

Almost surely, 2^652665420 is an apocalyptic number.

652665420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

652665420 is an abundant number, since it is smaller than the sum of its proper divisors (1507070340).

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

652665420 is a wasteful number, since it uses less digits than its factorization.

652665420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329655 (or 329650 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 652665420 is about 25547.3172759881. The cubic root of 652665420 is about 867.4215372510.

The spelling of 652665420 in words is "six hundred fifty-two million, six hundred sixty-five thousand, four hundred twenty".