655072 has 24 divisors (see below), whose sum is σ = 1407672. Its totient is φ = 297600.

The previous prime is 655069. The next prime is 655087. The reversal of 655072 is 270556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579 + ... + 1282.

It is an arithmetic number, because the mean of its divisors is an integer number (58653).

2⁶⁵⁵⁰⁷² is an apocalyptic number.

It is an amenable number.

655072 is an abundant number, since it is smaller than the sum of its proper divisors (752600).

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

655072 is a wasteful number, since it uses less digits than its factorization.

655072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 655072 is about 809.3651833382. The cubic root of 655072 is about 86.8486380342.

The spelling of 655072 in words is "six hundred fifty-five thousand, seventy-two".