255668736 has 80 divisors (see below), whose sum is σ = 710829504. Its totient is φ = 81506304.

The previous prime is 255668723. The next prime is 255668741. The reversal of 255668736 is 637866552.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 31710 + ... + 38946.

Almost surely, 2^255668736 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 255668736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355414752).

255668736 is an abundant number, since it is smaller than the sum of its proper divisors (455160768).

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

255668736 is an equidigital number, since it uses as much as digits as its factorization.

255668736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7281 (or 7265 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The square root of 255668736 is about 15989.6446489595. The cubic root of 255668736 is about 634.6864229741.

The spelling of 255668736 in words is "two hundred fifty-five million, six hundred sixty-eight thousand, seven hundred thirty-six".