245606656 has 36 divisors (see below), whose sum is σ = 491837500. Its totient is φ = 122406912.

The previous prime is 245606651. The next prime is 245606659. The reversal of 245606656 is 656606542.

It can be written as a sum of positive squares in 2 ways, for example, as 99680256 + 145926400 = 9984^2 + 12080^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (245606651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87970 + ... + 90718.

Almost surely, 2^245606656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245606656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245918750).

245606656 is an abundant number, since it is smaller than the sum of its proper divisors (246230844).

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

245606656 is an equidigital number, since it uses as much as digits as its factorization.

245606656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 245606656 is about 15671.8427761384. The cubic root of 245606656 is about 626.2485173862.

The spelling of 245606656 in words is "two hundred forty-five million, six hundred six thousand, six hundred fifty-six".