655212000 has 96 divisors (see below), whose sum is σ = 2146513824. Its totient is φ = 174720000.

The previous prime is 655211981. The next prime is 655212013. The reversal of 655212000 is 212556.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15301 + ... + 39300.

It is an arithmetic number, because the mean of its divisors is an integer number (22359519).

Almost surely, 2^655212000 is an apocalyptic number.

655212000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655212000 is an abundant number, since it is smaller than the sum of its proper divisors (1491301824).

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

655212000 is a wasteful number, since it uses less digits than its factorization.

655212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54629 (or 54611 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 655212000 is about 25597.1092117841. The cubic root of 655212000 is about 868.5482460258.

Adding to 655212000 its reverse (212556), we get a palindrome (655424556).

The spelling of 655212000 in words is "six hundred fifty-five million, two hundred twelve thousand".