655652247 has 16 divisors (see below), whose sum is σ = 945087360. Its totient is φ = 402903072.

The previous prime is 655652233. The next prime is 655652267. The reversal of 655652247 is 742256556.

It is not a de Polignac number, because 655652247 - 2¹⁹ = 655127959 is a prime.

It is a super-2 number, since 2×655652247² = 859759737992298018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 655652199 and 655652208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655652267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153333 + ... + 157550.

It is an arithmetic number, because the mean of its divisors is an integer number (59067960).

Almost surely, 2^655652247 is an apocalyptic number.

655652247 is a deficient number, since it is larger than the sum of its proper divisors (289435113).

655652247 is a wasteful number, since it uses less digits than its factorization.

655652247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310942.

The product of its digits is 504000, while the sum is 42.

The square root of 655652247 is about 25605.7073130191. The cubic root of 655652247 is about 868.7427327722.

The spelling of 655652247 in words is "six hundred fifty-five million, six hundred fifty-two thousand, two hundred forty-seven".