64266256 has 40 divisors (see below), whose sum is σ = 132413400. Its totient is φ = 30111744.

The previous prime is 64266221. The next prime is 64266259. The reversal of 64266256 is 65266246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46457856 + 17808400 = 6816^2 + 4220^2 .

It is not an unprimeable number, because it can be changed into a prime (64266259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94590 + ... + 95266.

It is an arithmetic number, because the mean of its divisors is an integer number (3310335).

Almost surely, 2^64266256 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 64266256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66206700).

64266256 is an abundant number, since it is smaller than the sum of its proper divisors (68147144).

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

64266256 is a wasteful number, since it uses less digits than its factorization.

64266256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1045 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 64266256 is about 8016.6237282287. The cubic root of 64266256 is about 400.5539325427.

It can be divided in two parts, 64 and 266256, that multiplied together give a square (17040384 = 4128²).

The spelling of 64266256 in words is "sixty-four million, two hundred sixty-six thousand, two hundred fifty-six".