656226254 has 4 divisors (see below), whose sum is σ = 984339384. Its totient is φ = 328113126.

The previous prime is 656226211. The next prime is 656226257. The reversal of 656226254 is 452622656.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656226257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164056562 + ... + 164056565.

It is an arithmetic number, because the mean of its divisors is an integer number (246084846).

Almost surely, 2^656226254 is an apocalyptic number.

656226254 is a deficient number, since it is larger than the sum of its proper divisors (328113130).

656226254 is a wasteful number, since it uses less digits than its factorization.

656226254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328113129.

The product of its digits is 172800, while the sum is 38.

The square root of 656226254 is about 25616.9134362436. The cubic root of 656226254 is about 868.9961796058.

The spelling of 656226254 in words is "six hundred fifty-six million, two hundred twenty-six thousand, two hundred fifty-four".