655285247 has 24 divisors (see below), whose sum is σ = 738052560. Its totient is φ = 580643840.

The previous prime is 655285201. The next prime is 655285291. The reversal of 655285247 is 742582556.

It is not a de Polignac number, because 655285247 - 2¹⁶ = 655219711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655285198 and 655285207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655287247) 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, 342668 + ... + 344574.

It is an arithmetic number, because the mean of its divisors is an integer number (30752190).

Almost surely, 2^655285247 is an apocalyptic number.

655285247 is a deficient number, since it is larger than the sum of its proper divisors (82767313).

655285247 is a wasteful number, since it uses less digits than its factorization.

655285247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011 (or 1994 counting only the distinct ones).

The product of its digits is 672000, while the sum is 44.

The square root of 655285247 is about 25598.5399388324. The cubic root of 655285247 is about 868.5806101985.

The spelling of 655285247 in words is "six hundred fifty-five million, two hundred eighty-five thousand, two hundred forty-seven".