255347646 has 16 divisors (see below), whose sum is σ = 513264000. Its totient is φ = 84687768.

The previous prime is 255347627. The next prime is 255347681. The reversal of 255347646 is 646743552.

It is a junction number, because it is equal to n+sod(n) for n = 255347598 and 255347607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105736 + ... + 108123.

It is an arithmetic number, because the mean of its divisors is an integer number (32079000).

Almost surely, 2^255347646 is an apocalyptic number.

255347646 is an abundant number, since it is smaller than the sum of its proper divisors (257916354).

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

255347646 is a wasteful number, since it uses less digits than its factorization.

255347646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214063.

The product of its digits is 604800, while the sum is 42.

The square root of 255347646 is about 15979.6009336904. The cubic root of 255347646 is about 634.4206143877.

The spelling of 255347646 in words is "two hundred fifty-five million, three hundred forty-seven thousand, six hundred forty-six".