256446606 has 16 divisors (see below), whose sum is σ = 552346704. Its totient is φ = 78906624.

The previous prime is 256446599. The next prime is 256446611. The reversal of 256446606 is 606644652.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1643811 + ... + 1643966.

It is an arithmetic number, because the mean of its divisors is an integer number (34521669).

Almost surely, 2^256446606 is an apocalyptic number.

256446606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256446606 is an abundant number, since it is smaller than the sum of its proper divisors (295900098).

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

256446606 is a wasteful number, since it uses less digits than its factorization.

256446606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287795.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 256446606 is about 16013.9503558616. The cubic root of 256446606 is about 635.3294473342.

The spelling of 256446606 in words is "two hundred fifty-six million, four hundred forty-six thousand, six hundred six".